Next.js v16.2.0 — Release Notes & Engineering Impact

> [!TIP] > **Check out our Next v16.2 [Blog Post](https://nextjs.org/blog/next-16-2) to learn more about this release.** ### Core Changes - Upgrade React from `f93b9fd4-20251217` to `65eec428-20251218`: #87323 - Turbopack: Create junction points instead of symlinks on Windows: #87606 - Turbopack: Symlink handling follow-up: #87637 - Add experimental routing package for resolving adapter routes: #86404 - Ensure outputs are correct with cache components in deployment adapters: #87018 - Move off of deprecated url.parse: #87257 - [strict-route-types] Add `experimental.strictRouteTypes` config: #87378 - misc: fix type check log for CI envs: #87838 - fix: revalidateTag with profile should not trigger client cache invalidation: #88069 - chore: warn when running tests against stale build: #88001 - Redesign default error pages with cleaner, more user-friendly UI: #87988 - dx: avoid next-env.d.ts change in dev: #88103 - prevent browser cache from using stale RSC responses from previous builds: #86554 - [strict-route-types] Typecheck App Router page props: #87386 - [strict-route-types] Enforce common React Component return types in App Router: #87389 - [strict-route-types] Switch to `satisfies` when validating page and route modules: #87398 - [strict-route-types] Don't reject `number` in `config.api.bodyParser.sizeLimit` when validating route: #87633 - Revert "dx: avoid next-env.d.ts change in dev": #88153 - [strict-route-types] Typecheck pages router routes in absence of App Router: #87628 - [strict-route-types] Ensure cache profiles and routes are type-checked even if .next is excluded: #87768 - add compilation error for taint when not enabled: #88173 - feat(next/image)!: add `images.maximumResponseBody` config: #88183 - Add maximum size limit for postponed body parsing: #88175 - metadata: use fixed segment in dynamic routes with static metadata files: #88113 - feat: add --experimental-cpu-prof flag for dev, build, and start: #87946 - Add experimental option to use no-cache instead of no-store in dev: #88182 - fix overlay frames cannot be opened sometimes: #88210 - Handle pnpm-workspace.yaml while searching for monorepo root: #74818 - Add more debug logs to `'use cache'` wrapper: #88219 - Omit unused arguments from `'use cache'` function calls: #86920 - Only log `pending revalidates...` debug log if applicable: #88221 - fix(next/image): bump [email protected]: #88238 - Disallow javascript urls in router methods and redirects: #88185 - Fix relative same host redirects in node middleware: #88253 - Remove loadConfig from main development process, pass value from child process: #88230 - Update deploy adapters outputs and handler interfaces for node and edge: #88247 - Move Ready in time before handler initialization: #88235 - next/image: support custom cache handlers: #88248 - feat: add Claude Code plugin marketplace with Cache Components skill: #87993 - refactor: consolidate PPR into cacheComponents architecture: #88243 - Turbopack: include fewer traced files for standalone: #88322 - feat(turbopack): add resolve plugin condition variant of Always and Never: #88190 - perf: use length = 0 to clear the logging array: #88244 - Time logs: Show full millisecond instead of 1 decimal: #88313 - [turbopack] Enable inferring module side effects by default: #87216 - Track search string as part of "refresh state": #87203 - Pass RouteTree into navigation function: #87256 - Read from segment cache unknown routes: #87293 - Pass loading boundary as part of RSC data: #87825 - Revert "refactor: consolidate PPR into cacheComponents architecture (#88243)": #88421 - fix: support TypeScript `noUncheckedSideEffectImports` for CSS imports: #88199 - Don't import typescript at runtime: #88321 - fix: use RDC for server action requests: #88129 - Warn when overriding Cache-Control header on `/_next/` routes: #88353 - [prebuilt-skew-protection] feat: adding in automatic deploymentId: #88012 - Revert "[prebuilt-skew-protection] feat: adding in automatic deploymentId": #88449 - Turbopack: Update reqwest, remove experimental system TLS feature: #88290 - Revert "prevent browser cache from using stale RSC responses from pre…: #88457 - Turbopack: retain loader tree order for metadata: #88487 - Turbopack: more dead code: #88505 - fix(build): prevent route handler manifests from inheriting unrelated client components: #88419 - Upgrade React from `65eec428-20251218` to `3e1abcc8-20260113`: #88530 - Better typesafety for `interopDefault`: #88486 - keep next-env.d.s unchanged between dev and build: #88428 - Remove sibling caches from CacheNode tree: #87991 - Upgrade React from `3e1abcc8-20260113` to `4a3d993e-20260114`: #88547 - Finish deleting Mutable from router implementation: #88046 - fetch(next/image): reduce maximumResponseBody from 300MB to 50MB: #88588 - [CC] Fix dev validation error from server action bound args: #88600 - Fix incorrect 'Ready in' time for next start: #88589 - feat: server action logging: #88277 - Log browser error and warnings in terminal: #88352 - Upgrade React from `4a3d993e-20260114` to `bef88f7c-20260116`: #88649 - fix: make RedirectType constant properties literal types: #88653 - Turbopack: add support for matching loaders on resource queries: #88644 - fix: capture promisified setImmediate separately: #88346 - fix: setImmediate[util.promisify.custom] access fails in edge runtime: #88685 - Fix `--debug-build-paths` bracket escaping for glob patterns: #88660 - Add negation pattern support to `--debug-build-paths`: #88654 - Only filter next config if experimental flag is enabled: #88733 - [Devtool Indicator] Fix cross alignment: #88664 - Turbopack: don't use build id for pages router client-side manifests: #88641 - Allow inspecting server with `next start --inspect`: #88744 - Turbopack: Add `--debug-build-paths` support to filter routes: #88655 - Upgrade React from `bef88f7c-20260116` to `41b3e9a6-20260119`: #88756 - Use rewritten pathname for implicit cache tags: #88732 - Upgrade React from `41b3e9a6-20260119` to `d2908752-20260119`: #88774 - Add experimental_gesturePush to App Router: #88776 - Rename `rewroteURL` to `rewrittenPathname` in request metadata: #88751 - Simplify `getImplicitTags` to accept pathname instead of url object: #88753 - Add `NEXT_DEPLOYMENT_ID` global: #86738 - Turbopack: remove deployment id suffix from client reference manifest chunks: #88741 - Inject `<html data-dpl-id>` and don't inline it into JS anymore: #88761 - [metadata] match the Metadata and ResolvedMetadata type: #88739 - Reuse bfcache data during Full prefetches: #88606 - Embed static sibling info in route tree: #88692 - Fix `revalidatePath` with params and trailing slash when deployed: #88623 - fix: preserve cache behavior for PPR fallback shells with root params: #88556 - Upgrade React from `d2908752-20260119` to `b546603b-20260121`: #88860 - stabilize browser log forward options: #88857 - [devtools] Wrap long file names of stack frames in the error overlay: #88886 - [devtools] Fix notch coloring of error overlay in forced colors mode: #88892 - Remove `deploymentId` from App Router `RenderOptsPartial`: #88866 - feat: implement LRU cache with invocation ID scoping for minimal mode response cache: #88509 - [prebuilt-skew-protection] feat: adding in automatic deploymentId: #88496 - [devtool] Add hydration diff indicator for diff lines: #88919 - Revert "[prebuilt-skew-protection] feat: adding in automatic deploymentId": #88942 - [turbopack] add task type infromation to the print_cache_item_size feature: #88925 - Upgrade React from `b546603b-20260121` to `24d8716e-20260123`: #88963 - Turbopack: add `?dpl=` to all asset urls returned by Turbopack: #88828 - feat(next-codemod): add agents-md command for AI coding agents: #88961 - Update font data: #88975 - Improve agents-md prompt to force doc retrieval: #88997 - [Reapply] Add `useEffectEvent` to disallowed React APIs in Server Components: #88985 - Apply fixes for onBuildComplete and route module: #88831 - Rename `renderOpts.nextExport` to `isBuildTimePrerendering`: #88951 - docs: fix typos in `README.md`s: #89022 - refactor: consume global-error from loader tree: #88437 - Fix chunk loading when using `__turbopack_load_by_url__` with query: #88899 - [mcp] change the mcp endpoint response to JSON: #88911 - Reapply "[turbopack] Add bundling support for worker_threads" (#88725): #88967 - fix: ensure LRU cache items have minimum size of 1 to prevent unbounded growth: #89040 - Upgrade React from `24d8716e-20260123` to `8c34556c-20260126`: #89066 - Use null-prototype objects in server actions manifests: #89069 - Re-enable types-and-precompiled: #89070 - Apply segment changes to adapters outputs: #89072 - Improve no response route handler error: #89036 - Limit number of server action arguments to 1000: #89068 - [prebuilt-skew-protection] feat: adding in automatic deploymentId: #88958 - Decouple route stale time from segment-level data: #88834 - Decouple route and segment cache lifecycles: #88989 - [ci] Silence `baseline-browser-mapping` warnings: #89175 - [Cache Components] Prevent streaming fetch calls from hanging in dev: #89171 - React types update: #89110 - [nextjs] feat: removing length requirement: #89173 - add GPTBot to matcher for known bots: #89188 - Ensure `.md` licenses are included in vendored packages: #89201 - Switch development log item format as JSON: #89168 - IsolatedDevBuild flag removal: #89167 - fix: coerce HEAD to GET for internal images: #84180 - Upgrade React from `10680271-20260126` to `230772f9-20260128`: #89250 - Upgrade `tar` used to extract SWC binary : #89158 - Sort prerender manifest routes: #89246 - Track vary params for segments without server-side param access: #88998 - Optimistic routing: client-side route prediction: #88965 - Keep pages/404.js to be able to dynamically render it anyway: #89263 - fix: fully static pages should emit & serve static rsc payloads: #89202 - fix: CSRF origin matching should be case-insensitive: #89127 - fix(build): format runAfterProductionCompile duration as human-readable time: #89232 - fix(router): support BigInt in query parameters: #89213 - Update font data: #89200 - Update font data: #89272 - Turbopack: add support for contentType condition for webpack loaders: #89156 - Revert "fix(router): support BigInt in query parameters": #89283 - Track vary params during static prerendering: #89267 - Improve lock dir error message: #89119 - Ensures `browserslist` doesn't issue outdated warnings for `baseline-browser-mapping`: #89287 - Replace build id in Pages data routes with deployment id: #88959 - Upgrade React from `230772f9-20260128` to `da641178-20260129`: #89301 - Inline handler dependencies instead of tracing: #89269 - Turbopack: add `rules.*.type` config to allow changing the type of a module: #88788 - Add experimental.varyParams feature flag: #89307 - Fix/zlib mem node: #89099 - Revert "Replace build id in Pages data routes with deployment id (#88959)": #89323 - Turbopack: Rename crates/napi to crates/next-napi-bindings and update crate name: #89314 - feat: detect @typescript/native-preview as alternative TypeScript compiler: #89149 - Revert "Fix/zlib mem node": #89322 - Turbopack: FreeVarReference::ReportUsage: #89302 - Make Server Function logging opt-in via `logging.serverFunctions`: #89321 - Restore default-enabled Server Function logging: #89407 - Re-add build-complete traces for webpack: #89402 - Skip Server Function logging for `'use cache'` functions: #89408 - Replace flight navigation build id field with header: #88855 - Upgrade React from `da641178-20260129` to `ed4bd540-20260202`: #89401 - Upgrade React from `ed4bd540-20260202` to `b1533b03-20260203`: #89444 - Upgrade React from `b1533b03-20260203` to `3e00319b-20260203`: #89449 - Rename CACHE_ONE_YEAR for clarity and fix usage: #89450 - [Codemod] Fix agents-md on Windows: #89319 - Experimental deferred entries handling: #88347 - Add `experimental.reportSystemEnvInlining` for Turbopack: #89304 - fix: use signal-based exit codes to prevent inspector blocking exit: #89351 - Add Instant Navigation Testing API: #89465 - Support MPA navigations in `instant()`: #89469 - Handle Pages data route skew with deployment id header, take 2: #89325 - Include owner stack for forwarded errors if available: #89493 - [CC] Rename "unstable_prefetch" to "unstable_instant": #89448 - Ensure module contexts are always included in adapter traces: #89508 - Don't insert build id comment in HTML: #89478 - Clarify type checking error message: #89525 - Require explicit `cacheLife` on outer `"use cache"` when nesting short-lived caches: #89481 - [Instant] Instant validation in Dev: #89077 - Upgrade React from `3e00319b-20260203` to `95ffd6cd-20260205`: #89550 - Turbpopack: fix is_persistent_caching_enabled: #89533 - Fix a small doc typo: #89553 - Ensure _middleware is consistent in adapter for name/id: #89559 - Ensure Errors with deep causal chains respect inspect depth: #89594 - refactor: extract route discovery into unified `discoverRoutes()` API: #88971 - Ensure static metadata are static outputs for adapters: #89574 - Resolve local variable references in error code SWC plugin: #89596 - Turbopack: Add --experimental-server-fast-refresh CLI flag: #89274 - Fix deployment id header when proxying: #89593 - fix: deprecated util._extend: #89614 - Fix missing non-deferred turbopack build items: #89616 - Revert "Ensure _middleware is consistent in adapter for name/id": #89624 - Omit unused arguments for server actions: #89651 - Upgrade React from `95ffd6cd-20260205` to `2dd9b7cf-20260208`: #89681 - Include `AggregateError.errors` in terminal output: #88999 - fix(image): findClosestQuality returns 0 for low quality values: #89621 - Upgrade React from `2dd9b7cf-20260208` to `272441a9-20260209`: #89722 - Avoid using unclosing prefetch streams in the browser: #89610 - Pass shouldCache to all manifest loading calls: #89713 - Add 2nd cloned body to FinalizationRegistry. Only used RuntimeStyles component for webpack: #88577 - Tracing: trace render times as render-path: #89763 - Turbopack: Server HMR infrastructure: #88870 - Turbopack: Reorganize runtime files into shared/runtime directory: #89461 - [Instant] Validation on client navs: #89777 - Turbopack: extract core hmr client logic into shared runtime: #88912 - Turbopack: Fix slow filesystem benchmark warning for `next dev`: #89798 - Add turbopackIgnoreIssue config to suppress Turbopack warnings: #89682 - Add support for with `type: "text"` under a new experimental flag, following what webpack did: #89560 - Remove unused devtools code handling React without `use`: #89793 - [devtools] Wrap overlay in Activity: #89818 - Add CSS URL deployment ID suffix support: #89771 - Fix cascading LRU eviction during prefetch batches: #89766 - Refactor prerenderManifest passing: #89765 - [AI] Ship bundled docs in next and generate AGENTS.md in create-next-app: #89850 - Turbopack: Implement server hmr in nodejs dev runtime: #89130 - Allow sitemap.ts and sitemap/page.tsx to coexist in Turbopack: #89789 - [fragment-scroll] Cleanup scroll and focus restoration in layout router: #83110 - [fragment-scroll] Add `experimental.appNewScrollHandler`: #83107 - [Instant] Fix crash with search params: #89922 - Fix memory leak in dev mode caused by fast-set-immediate: #89779 - Trace upload: include experimental flag states: #89845 - Upgrade React from `272441a9-20260209` to `6066c782-20260212`: #89923 - Add a better error message for when turbopack cannot be loaded: #89633 - fix: support multiple icon formats with same base name (icon.png + icon.svg): #89504 - Turbopack: Move turbopackIgnoreIssue from experimental to turbopack.ignoreIssue: #89817 - Build with dev runtimes when `--debug-prerender` is set: #89834 - Append deployment id query string for next-font: #89960 - Fix parallel routes with deferred entries: #89967 - Rename node extension utils for clarity: #89970 - Model abandoning by signal: #89971 - Fix missing incremental cache in middleware unstable_cache: #89980 - Run fast immediates during prerender abort to fix flaky I/O stack traces: #89969 - [fragment-scroll] Ensure hoisted elements don't break scroll-to-top on page navigations: #83108 - dx: Include path count in export error message: #89333 - fix(agents-md): use `require.resolve()` to get the installed `next` version: #89166 - docs: agent skills, pr-status script, and AGENTS.md updates (1/8): #89857 - Ignore `prefetch={true}` on Links to routes with `instant`: #90061 - Expand deferred entries test suite and fix turbopack build: #90057 - Use StageController for runtime prerendering: #89972 - Improve task pipelining: #90065 - fix(next/legacy/image): add deployment id (dpl) query string support: #89956 - Cache expected missing manifest read: #89908 - Use for...in instead of Object.keys for parallelRouteKey traversal: #89905 - [Instant] allow non-blocking dynamic holes and errors in shared parents: #89875 - Move prefetch hints from CacheNodeSeedData to FlightRouterState: #90066 - [Instant] Don't block on client APIs that wouldn't block in the browser: #89924 - [devtools] Add support for error causes in the dev overlay: #90108 - Unify runInSequentialTasks across all sequential task work: #89978 - Cleanup all stage promises on abort: #89984 - segment cache: fix segment cache normalizer: #90111 - Handle null history.state in client-side router popstate handler: #90083 - Don't parse default postponedsizelimit: #89906 - Turbopack: handle invalid RSC imports via importmap: #88146 - [create-next-app] Improve AGENTS.md prompt wording: #90118 - ensure maxPostponedStateSize is always respected: #90060 - Upgrade React from `6066c782-20260212` to `4842fbea-20260217`: #90144 - [fragment-scroll] Stop focusing the first focusable host descendant: #89903 - fix: normalize loopback only in hostname: #90158 - Only error for sync IO after runtime in segments that would be runtime prefetched: #89979 - [refactor] Replace runtime prefetch sentinel transform stream: #90160 - fix: use Buffer.indexOf in uint8array helpers for faster byte scanning (3/8): #89864 - Automatically build and clear native build when running `pnpm build`: #89819 - fix(cache): DCE to avoid pulling server internals into browser bundles (4/8): #89865 - Attach active src route to next global: #90171 - Fix OTEL propagation and add direct entrypoint e2e coverage: #90181 - Use cookie as sole protocol for instant navigation testing: #89871 - Simplify metadata tag rendering to flat imperative style: #90209 - Prevent unhandled rejection filter from being bundled into the server runtime: #90205 - [Instant] speed up test instant-validation suite: #90214 - Turbopack: fix static asset skew protection for edge and prerenders: #90238 - Remove workStore from params/searchParams/pathname function signatures: #90215 - Remove workStore from metadata resolution chain: #90217 - [Instant] export "Instant" config type: #90257 - Replace getDynamicParamFromSegment closure with interpolatedParams in metadata: #90249 - [Instant] Dev Tools toggle for Instant Navigation Mode: #90222 - [instant] Include declaration location of instant config in validation errors: #90169 - Turbopack: rename ServerPaths to AssetPaths: #90234 - feat(next/image): add lru disk cache and `images.maximumDiskCacheSize`: #89963 - Revert "Handle null history.state in client-side router popstate handler": #90268 - [devtools] Omit empty looking error messages: #90256 - Fix runtime prefetch `isPartial` byte stripping when deployed: #90272 - Upgrade React from `2ba30655-20260219` to `ab18f33d-20260220`: #90279 - validate sync IO in generateMetadata according to Page's prefetchable status: #90164 - Turbopack: support Subresource Integrity : #90152 - segment cache: add test for passing unawaited promise to context provider: #89339 - Fix route.replace crash with --debug-build-paths: #90312 - refactor(app-render): extract stream-ops and debug-channel modules (5/8): #89858 - [turbopack] Consider `ignoreList` of 3rd party sourcemaps in Redbox: #90317 - [turbopack] Remove obsolete is_internal field : #90329 - Fix: Image component ignores images.qualities in Jest environment: #89536 - Revert "keep next-env.d.s unchanged between dev and build": #90384 - Fix route cache keying for unprefetched navigations: #90400 - Add support for Next.js error telemetry for `AggregateError`: #90391 - Fix `config.reactProductionProfiling` for Webpack: #90430 - next-image: fix deployment id handling for unoptimized: #90416 - [ci] Fix input cache keys for tasks referencing `rust-toolchain`: #90442 - next-image: fix dpl handling with unicode: #90420 - Upgrade React from `ab18f33d-20260220` to `c0060cf2-20260224`: #90452 - [ci] Stop using Turbopack tests in native binary build cache keys: #90449 - [Instant] Validate blocking head: #89539 - Turbopack: Fix experimental server hmr for pages router: #90398 - Fix params leaking into instant navigation shell in dev: #90455 - Limit build workers to pages+1: #90475 - fix: sanitize worker args for worker_threads compatibility: #90506 - Fix varyParams tracking for optional catch-all params with no value: #90496 - Don't start worker for Typescript when only doing config validation: #90504 - [Instant] Fix loading.js not being counted as a suspense boundary: #90292 - [ci] Crash if next-swc could not be loaded when `NEXT_TEST_NATIVE_DIR` is specified: #90387 - Fix: server-patch retry preserves push/replace intent of suspended transitions: #90533 - Cached Navigations: Serve cached segments instantly on repeat visits: #90223 - Throw when `unstable_instant` is used in Client Component: #90396 - [test] Fix jest-haste-map warnings: #82995 - Don't require collect-build-traces with Turbopack: #90586 - Enable `experimental.reactDebugChannel` by default: #90310 - Less dynamic pages manifest path: #90581 - Upgrade React from `c0060cf2-20260224` to `98ce535f-20260226`: #90605 - Turbopack: Add Next.js version to "initialize project" trace span: #90545 - [devtools] Stop sending codeframes for ignored frames: #90577 - Allow `reset()` from user's global-error: #89684 - Fix per-segment prefetching for initial loads with Cache Components: #90610 - Add `unstable_retry()` to error.js: #89685 - Fix edge index page _next/data route: #90611 - Turbopack server hmr: Implement `restart` event: #90550 - Turbopack: Panic if a top-level task attempts an eventually consistent read: #89735 - Fix middleware case with adapters: #90624 - refactor(turbopack-node): support execution by napi and worker_threads: #86266 - [instant] Allow providing user feedback for blocking route errors: #90498 - Allow Node.js' experimental inspector flags in `next dev` and `next build`: #90603 - tests: Assert dpl query string in all tests for Turbopack: #90592 - [instant] Don't add debug stack to random `unstable_instant` exports: #90273 - Adapter: STATIC_FILE.immutableHash: #90045 - Turbopack: experimental.immutableAssetToken: #88607 - remove runInContext callbacks from stream-ops: #90609 - Turbopack: restrict server HMR to app pages: #90663 - Turbopack: Allow turbopack-node backend to be swapped at runtime using an experimental config option: #90671 - Turbopack: Revert default loader runtime backend to child processes: #90675 - [devtools] Stop blocking overlay on error details copy: #90698 - feat: provide nextVersion to modifyConfig adapter hook: #90735 - experimental.prefetchInlining: bundle segment prefetches into a single response: #90555 - instant(): fix cookie handling for fresh page loads: #90613 - fix(turbopack): use posix.join for client URL manifest paths on Windows: #90700 - Turbopack: improve cell order lint rule for ReadRef::cell: #88500 - Change names of logged times: #90688 - [devtools] Bump React Compiler version to latest experimental: #90763 - Skip writeToBfCache without window: #90771 - docs: error component `unstable_retry()`: #89732 - Stub adapterPath with experimental.runtimeServerDeploymentId: #90790 - Conditionally load uncommon paths: #90514 - Refactor extractExportedConstValue to return { value } | null instead of throwing: #90510 - Reimplement code frame rendering in native code: #85592 - [devtools] Bundle for same target as Next.js browser runtime: #90762 - Upgrade React from `98ce535f-20260226` to `4cc5b7a9-20260303`: #90827 - Add `transitionTypes` prop to `next/link`: #90701 - [otel] fix missing http.route attribute: #90832 - [otel] set parent span name: #90840 - Update default error pages: #90469 - Replace PPR config helpers with cacheComponents checks: #90704 - Cached Navigations: Cache visited fully static pages in the segment cache: #90306 - Remove `isRoutePPREnabled` from render options and delete dead PPR branch: #90713 - Use page extensions in next-swc transforms applying to pages: #90650 - Cached Navigations: Cache static stage of partially static initial HTML: #90539 - Remove `PrerenderStorePPR` type and all `prerender-ppr` switch cases: #90721 - Clean up legacy PPR references in test fixtures: #90725 - Cached Navigations: Cache runtime stage data from navigation requests: #90666 - Remove legacy PPR postpone cluster: #90726 - partial fallbacks: add adapter flag: #90395 - Address review feedback: extract modules, clean up imports: #90813 - Add trace spans for turbopack persistence in .next/trace: #90397 - Upgrade React from `4cc5b7a9-20260303` to `3bc2d414-20260304`: #90876 - Fix prefetch inlining build failure with dynamic routes: #90899 - Update `@vercel/og` and `satori` vendors: #90933 - Batch require cache deletion to avoid quadratic scanning: #90625 - Revert legacy PPR removal: #90948 - Rewrite instant validation to use depth-based URL boundary discovery: #90905 - Add `experimental.cachedNavigations` feature flag: #90928 - preserve allowQuery for partial fallback shells: #90887 - Cache runtime data for partially static pages on initial load (resume): #90888 - re-introduce partial fallback -> route upgrading: #89063 - fix: Don't fall through to catch-all when static child subtree doesn't match: #90957 - Bump Node heap limit for lint-no-typescript to avoid OOM in CI: #90996 - Upgrade React from `3bc2d414-20260304` to `46103596-20260305`: #90989 - fix: trigger MPA navigation for server action redirects with build ID mismatch: #89946 - Improve webpack loader error messages and handling: #89698 - Turbopack: implement module.hot.accept(deps, cb) and module.hot.decline(deps): #90443 - partial fallbacks: gate behind experimental flag: #91123 - fix: app-page URL normalization: #91121 - Updates to Instant Navs devtools functionality: #91005 - Trace upload: add git and environment info: #91124 - fix(css): rewrite MiniCssExtractPlugin insert function to ES5 to support legacy browsers: #90556 - Revert "Address review feedback: extract modules, clean up imports": #91159 - [turbopack] Render code frames on the turbopack side: #90534 - Add experimental.lightningCssFeatures config option: #90901 - fix: correct appPaths sort order for parallel routes with route groups: #91160 - Tracing: tag spans as failed if their runner fn fails: #91206 - Adds a Start button to the Instant Navs panel to initiate inspection …: #91216 - Preserve RSC metadata in Proxy request with skipProxyUrlNormalize: #91213 - [cna] Bump `picocolors` to 1.1.1: #91252 - [Instant] Build-time validation: #90964 - [Instant] fix instant config suggested by editor plugin: #91262 - chore(deps): Bump tar from 7.5.7 to 7.5.11 in /packages/next: #91233 - Upgrade React from `46103596-20260305` to `5e9eedb5-20260312`: #91272 - feat(server): expose requestMeta router helpers and merge fallback context: #91235 - [Instant] Show owner stack for validation-blocking errors: #91277 - Hydrate page loads during instant navigation testing: #91207 - perf: use Buffer.from for base64 encoding of binary Flight data: #91221 - Skip dimming when `--inspect` is used: #91271 - Respect `generateStaticParams` in instant navigation shell: #91316 - [Prefetch Inlining] Generate size-based hints on server: #90891 - Wire cache handlers in edge paths and add e2e regression coverage: #91236 - Expose edge runtime fields in build-complete: #91239 - [turbopack] Remove `turbo_tasks::function` from ModuleReference getters: #91229 - [Turbopack] write route bundle stats to .next/diagnostics/route-bundle-stats.json: #90949 - partial fallbacks: only upgrade shells with remaining prerenderable params: #91158 - partial fallbacks: complete generic shells into more specific shells: #91231 - Add eval and docs for unstable_instant: #91334 - Simplify scroll restoration with shared ScrollRef on CacheNode: #91348 - fix: test-cargo-unit CI job timing out since LTO was enabled: #91424 - fix(build): don't block SSG on telemetry flush, add persistence spans to trace-build: #91335 - Ready in X - prints wrong timing on dev server restart: #90874 - Show generated code from loaders in parse error messages: #89898 - Remove unused layer from server actions manifest: #91425 - Support accessing root params in `generateStaticParams`: #91189 - Avoid `undefined` outer work unit store in `"use cache"`: #91190 - Add `unstable_dynamicStaleTime` route segment config: #91437 - [next-playwright] Use unique cookie values for instant navigation testing lock: #91250 - Add `unstable_catchError()` API for component-level error recovery: #89688 - docs(turbopack): Fix all warnings in `cargo doc --no-deps --workspace`, and run rustdoc as part of our CI checks: #91339 - Patch improvements into `http-proxy` lib: #91480 - Disallow Server Action submissions from privacy-sensitive contexts: #91478 - Fix startup warmup for empty-shell app route cache: #91470 - Fix `unstable_catchError` type inference for fallback props: #91485 - Support accessing root params in `"use cache"` functions: #91191 - Fix inconsistent cache life/tags propagation for cache handler hits: #91454 - Upgrade React from `5e9eedb5-20260312` to `c80a0750-20260312`: #91324 - Error when accessing undefined root params in `generateStaticParams`: #91519 - Buffer prefetch response before passing to Flight client: #91487 - [Segment Cache] Always upsert on prefetch completion: #91488 - Track vary params during runtime prefetches: #89297 - [react-sync] Allow locking in manual sync: #91509 - Remove devCacheControlNoCache experimental option (hard-code no-cache): #91503 - fix allowedDevOrigins for no-cors requests: #91506 - Remove webpack stats generation from Turbopack: #91515 - Upgrade React from `c80a0750-20260312` to `3f0b9e61-20260317`: #91522 - Move adapterPath from experimental to stable top-level config: #91535 - block disallowed dev origins by default: #91507 - Turbopack: Merge release-with-assertions-no-lto profile into release-with-assertions: #91530 - improve allowedDevOrigins error: #91521 - Add group depth tracking to instant validation boundary discovery: #91208 ### Documentation Changes - docs: next experimental-analyze: #87272 - docs: use cache private redo: #87111 - docs: fix highlight in 05-server-and-client-components.mdx: #87347 - Guide: Update `Optimizing Package Bundling` to include new Bundle Analyzer: #87246 - docs: generateMetadata and generateViewport w/ CC: #87218 - docs: tweaks/fixes to papercuts: #87445 - docs: fix typos and clarify examples in Cache Components guide: #87530 - [docs] add get_routes in mcp available tools: #88181 - Update generateMetadata in client component error: #88172 - docs: fix CSP example to only include unsafe-eval in development: #88407 - docs: add useSearchParams and useParams documentation for Pages Router: #88429 - docs: fix Pages Router fonts documentation showing App Router examples: #88326 - doc: add details of mcp client integration: #88543 - Turbopack: query conditions in rules follow-ups: #88801 - Docs: Add Next.js Glossary: #88811 - docs: Server functions rename: #86827 - docs: Update Partytown URLs and package reference: #88928 - docs: improve clarity in cache components and server/client docs: #88946 - docs: revalidatePath w/ rewrites and trailing slash: #88956 - Cache Component Guide: Building public, _mostly_ static pages: #87248 - Turbopack: Add postcss.config.ts support: #89049 - CC Guide: Fix filenames, reduce line breaks: #89065 - docs: fix code highlight in 07-fetching-data.mdx: #88727 - [docs] Always include `unsafe-eval` in dev `Content-Security-Policy`: #89163 - Turbopack: add support for turbopackOptional: true: #89227 - docs: Rename Error component to ErrorPage: #89284 - docs: replace 'can not' with 'cannot': #89354 - docs: Fix custom server code snippets: #89400 - Snippet multi package syntax: #89381 - Fix indentation of types of tests in docs: #89409 - docs: Fix syntax in proxy example code: #89395 - docs: fix ISR guide link to res.revalidate: #89342 - Fix spelling in robots.mdx documentation: #89565 - Remove more examples: #89709 - clarify unstable_cache replacement with use cache: #89435 - docs: correct use term: #89438 - [docs] Add `RedirectType` usage example to `permanentRedirect`: #89833 - Next CLI flags documentation: #89750 - docs: adapt lead to source path patterns: #89392 - docs: Papercuts Feb26: #89484 - After() docs requests API: #89837 - docs: Move browserToTerminal into logging: #88901 - Update documentation to explain behavior in a Catch-all route: #89742 - docs: add deploymentId config and clarify encryption key for self-hosting: #89795 - docs: adapterPath amends: #89930 - docs: improve next/image localPatterns error page: #89914 - docs: inline-css dev-action oriented: #89064 - docs: document cacheLife expire omission behavior and fix default preset value: #89913 - docs: Activity boundary guide: #89126 - Turbopack: Add inline loader configuration via import attributes: #89644 - docs: fix broken blockquote formatting in API Routes page: #89966 - docs: clarify async instrumentation register request : #90039 - Add AGENTS.md and bundled docs guide: #89973 - In-Depth Explanation of React Version Handling Doc: #89426 - Next.js sticky scroll standards: #90197 - docs: fixes typo in manifest.mdx regarding Route Handler note: #90394 - docs: improve form guide consistency and validation examples: #90361 - docs: rework version staleness: #90192 - docs: clarify that next upgrade is for 16.1.x+: #90435 - Add not-found.js / notFound() links to Status Codes section: #88332 - docs: update with more patterns and decision based: #90203 - docs: add Docker Standalone and Docker Export examples to Deploying page: #90386 - feat: Join guides and frame around UI preservation: #90595 - docs(deploying): add Hostinger Web Apps Hosting to Node.js deployment options: #90246 - docs: fix navigationType value and variable name in useReportWebVitals: #90599 - Accept header content negotiation: #90607 - docs: clarify native <script> usage for JSON-LD in docs: #90380 - Create next app CLI docs: #90788 - Unify caching story across the docs: #90149 - update proxy docs to use NextProxy type: #90647 - Loading layout docs update: #90787 - Uncached data suspense issue: #90450 - docs: explain deploy test custom scripts: #90966 - Update adapters documentation: #90986 - docs: large page data error: #90920 - docs(localFont): enhance details about using the localFont function: #88189 - chore(docs): mention behavior of redirects and remotePatterns: #91151 - docs: More Server Actions security guidance across docs: #90878 - docs: Streaming guide: #90779 - Docs: Split route segment config options into their own files: #90991 - Expose resolved invocation targets in next-routing: #91242 - docs: remove incorrect _document.tsx font example: #91346 - docs: `unstable_catchError()`: #89847 - SRI turbopack documentation: #90477 - docs: Clarify ignoreBuildErrors behavior: #91367 ### Example Changes - fix: Change Dockerfile.bun to use group/useradd instead of addgroup/user: #87443 - fix(examples): resolve hydration mismatch in blog-starter: #87703 - Update with-mysql example to Next.js 15, Tailwind 4, Prisma 7: #88475 - chore(examples): remove `with-recoil` exmaple: #81836 - chore(examples): remove `with-tigris` example: #81843 - [feat] Added Docker examples for standalone output and export output following best practices: #87069 - Migrate from react-markdown to Streamdown static in EdgeDB example: #86435 - example: restore .next handling for with-docker examples: #90651 - with-docker: add new config file formats: #90731 - example: remove duplicate items in .dockerignore: #91079 ### Misc Changes - Turbopack: refactor graph traveral and fix module graph determinism: #87312 - bundle analyzer: remove uncompressed toggle, stabilize top bar ui: #87325 - test: de-flake client-cache deployment tests: #87412 - Revert "Revert "[turbopack] Set `liveness` of exports based on assignment analysis (#82802)"": #87214 - ci: track runner name on datadog test reports: #87440 - Turbopack: In CI only persist at the end: #87316 - fix: correct quotes in dev script filter in package.json: #87638 - chore: add a missing period to rspack description: #86526 - [test] Move off of as much `url.parse` as possible: #87286 - Update Rspack production test manifest: #87889 - Update Rspack development test manifest: #87888 - chore(turbo-tasks-malloc): replace mimalloc-rspack to mimalloc: #87815 - fix: normalize CRLF line endings in jscodeshift tests on Windows: #88008 - chore: add Claude Code configuration: #87943 - test: reduce flakiness in opentelemetry test for prod mode: #88102 - Rename CLAUDE.md to AGENTS.md with symlink: #88105 - [turbopack] Populate the `names` field of sourcemaps: #87911 - Turbopack: fix order of breadth first edges: #88117 - Turbopack: transpile CHUNK_SUFFIX: #88128 - chore: add dev boot profiling and benchmark scripts: #87940 - perf: improve stats action reliability and reduce CI noise: #87945 - Update Rspack production test manifest: #88137 - Update Rspack development test manifest: #88138 - Fix compile error when running next-custom-transform tests: #83715 - chore: add Conductor configuration for parallel development: #88116 - fix: move conductor.json to repo root for proper detection: #88184 - Turbopack: Update to swc_core v50.2.3: #87841 - ci: run stats on canary pushes for historical trend tracking: #88157 - perf: improve stats thresholds to reduce CI noise: #88158 - Turbopack: Use batch get request to read more efficient from database: #87106 - Turbopack: improve aggregation update performance: #87317 - Add test creation instructions to agents.md: #88215 - Turbopack: report changed env vars in tracing: #88195 - Turbopack: get rid of some manual self.await-s: #88236 - Guard against Object/Array shadowing in 'use cache' transform: #88229 - feat(turbo-tasks-fs): support multi denied_paths: #88186 - Upgrade to swc 54: #88207 - ci: fix javascript-urls test to account for React 18: #88249 - Turbopack: Remove tokio and turbo-task handles from Invalidator: #88242 - Turbopack: remove Stateful flag: #88196 - Upgrade to rustc 2026-01-04: #88095 - Turbopack: include children count in "task execution completed" span: #87318 - Turbopack: avoid blocking tasks for I/O work: #87661 - Turbopack: flatten trace when it reaches cut off depth: #88118 - Turbopack: remove unused code: #88274 - Turbopack: escape colon in output names: #88273 - [test] Add a failing test for cycle serialization in segment prefetches: #88287 - Turbopack: scope hoisting bug with reexport-self-star: #86131 - Turbopack: Add #[automatically_derived] to proc macros: #88281 - Update Rspack development test manifest: #88260 - Turbopack: Use `format!` instead of `anyhow!` inside of `anyhow::Context::with_context` calls: #88293 - Turbopack: pull in updated vercel/nft tests: #88162 - Fix pack-next script for next-swc: #88126 - Turbopack: use correct flags in tests: #88307 - Turbopack: fix task category on reading cells: #88309 - agent.md: Explain where the Next.js core code lives: #88314 - Turbopack: improve next-server.nft.json tests: #88320 - Turbopack: add family to database read span: #88323 - Tests: Reduce loglines from apply patch delay: #88224 - Turbopack: prefetch children too: #88324 - Turbopack: more stale details for tracing: #88306 - Turbopack: make GraphTraversal deterministically calling all nodes before erroring: #88119 - Turbopack: improve error message for incompatible swc plugins: #86346 - Update Rspack development test manifest: #88301 - Update Rspack production test manifest: #88300 - Stats Action: Add ready in time: #88283 - fix: skip stats-aggregate job for docs-only changes: #88330 - docs: add PR description guidance to AGENTS.md: #88408 - ci: Fix retry comments in workflow files: #88412 - [test] Deflake `test/integration/invalid-custom-routes/test/index.test.ts`: #88416 - [test] Remove rogue debug log: #88423 - Update AGENTS.md with PR template and test generation requirements: #88417 - Add .cursor/worktrees.json configuration: #88415 - docs: add guidance for code block highlight line numbers to AGENTS.md: #88430 - [turbopack] Compute transitive side effects and use them to trim imports: #86675 - fix(turbo-tasks-backend): use correct TaskDataCategory for is_immutable check: #88331 - perf(turbo-tasks-backend): use DefaultStorage for AggregationNumber to save memory: #88336 - [Turbopack] Move DirList to its own module: #88256 - docs: add rebuild guidance and ICE troubleshooting to AGENTS.md: #88337 - Type-check `run-tests.js` and remove unused `related` flag: #88433 - [test] Remove obsolete reference to `NEXT_TEST_SKIP_RETRY_MANIFEST`: #88434 - Revert "[Turbopack] Move DirList to its own module": #88441 - [scripts] Avoid conflicting type for `pack-next --compress`: #88439 - Update Rspack production test manifest: #88403 - Update Rspack development test manifest: #88404 - [test] Always run all tests without aborting on failure: #88435 - Turbopack: remove sourcemapping comments: #88217 - Turbopack: use mimalloc on Linux musl: #88426 - Turbopack: add support for selective reads of keyed cell values: #88303 - Turbopack: Reduce usage of parse_quote in turbo-tasks-macros: #88454 - Turbopack: don't cell in async map: #88473 - Turbopack: replace is_reference_used with unused_references set: #88304 - Turbopack: add lint rule to not cell in async map: #88474 - Turbopack: Remove dead generic_type_macro code: #88455 - Turbopack: remove unused code: #88497 - Turbopack: improve cell order lint rule: #88498 - Turbopack: parallelize making dependent tasks dirty: #86755 - Turbopack: fix bad performance edge case in production chunking: #88508 - Remove `lerna bootstrap` from the `clean` script in package.json: #88527 - Turbopack: Clean up `VcRead::Repr` associated type: #88456 - [cna] Avoid error with out-of-box Netlify config: #88546 - [turbopack] Move some of the logic for issue filtering into the rust layer: #88511 - Update Rspack production test manifest: #88469 - Update Rspack development test manifest: #88470 - feat: add TaskStorage derive macro and schema infrastructure: #88338 - [ci] Don't retry/notify for failed deploy tests with custom tarball URLs: #88576 - fix(turbopack): Collect `declare global {}` in `VarDeclWithTsDeclareCollector`: #88568 - Update labeler.json: #88591 - Fix optional `parent_task_id` compile failure w/`tokio_tracing` enabled: #88598 - Turbopack: support disabling tsconfig lookup: #88529 - Turbopack: run tasks with priority based on distance to leaf: #87662 - Turbopack: avoid removing cells for erroring tasks: #88305 - [ci] Use native `concurrency` feature in build-and-test: #87287 - Turbopack: unflake unit test: #88620 - Turbopack: snapshot the ModuleGraph to avoid (eventual) inconsistent graphs: #88340 - Turbopack: Consistency for compute_async_module_info: #88409 - Turbopack: follow tracing spans through aggregation update queue: #88410 - Turbopack: avoid chunk_item_id task and use selective cell access instead: #88411 - Turbopack: MappedReadRef should be Send and Sync: #88558 - Turbopack: selective read for module_chunk_groups in ChunkGroupInfo: #88559 - Turbopack: use selective reads for merged modules: #88560 - Turbopack: add caching to chunking: #88561 - Turbopack: use bugs.nextjs.org for Turbopack panic error reports: #88356 - Turbopack: docs: condition.query will ship in 16.2.0, not 16.1.1: #88663 - [turbopack] Add bundling support for worker_threads: #87746 - [cna] Ensure created app is not considered the workspace root in pnpm: #88647 - Revert "[turbopack] Add bundling support for worker_threads": #88725 - [ci] Enable Turborepo remote caching in e2e release deploy tests: #88746 - [test] Deflake `test/development/app-dir/browser-log-forwarding/fixtures/verbose-level/verbose-level.test.ts`: #88754 - Fix `Build Commands` section in AGENTS.md: #88757 - [test] Deflake `test/development/app-dir/hydration-error-count/hydration-error-count.test.ts`: #88749 - [ci] Exclude `test/production` from deploy tests: #88763 - Apply `buildArgs` also for deploy tests (via `package.json`): #88731 - [ci] Ensure Turbo Remote Cache can be written to: #88794 - perf(turbopack): optimize resolve plugin handling: #88639 - Fix buildManifest.js deployment tests: #88806 - [ci] Merge Cache Components and deploy tests manifests when running CC deploy tests: #88824 - Turbopack: Extend filesystem watcher fuzzing to cover symlinks and junction points: #88192 - [test]: add ability to run test-deploy with pre-existing deployment: #88829 - Update deterministic-build assertion: #88820 - Turbopack: shrink amortized: #88619 - Fix deployment test due to data-dpl-id attribute: #88846 - [ci] Fix Rspack/Turbopack test manifest generation: #88845 - Turbopack: show compressed size for print_cache_item_size: #88850 - [test] Fix deploy test of `cache-components.server-action.test.ts`: #88854 - Turbopack: Use a real file entrypoint for Workers (and SharedWorkers): #88602 - Turbopack: Add file write invalidation tracking to filesystem watcher fuzzing: #88665 - Turbopack: Move fuzzer for fs watcher into a separate file/module: #88666 - Turbopack: Add a stress test / fuzzer that tries creating many symlinks in a tight loop: #88667 - Turbopack: Make the priority_runner testcase deterministic: #88651 - Turbopack: Various cleanup for turbo-tasks-fs, mostly retry logic and string formatting: #88668 - Turbopack: Tweak retry loop for link creation to try to fix os error 80 on Windows: #88669 - feat: Replace InnerStorage with the generated TaskStorage struct: #88355 - Turbopack: Use webpki-root-certs in addition to rustls-platform-verifier on Linux for bare-bones Linux images without root CA stores: #88869 - refactor: migrate to typed accessors and remove CachedDataItem adapter: #88397 - docs: add skill for updating Next.js documentation: #88656 - Turbopack: [chore] Fix Rust check warnings: #88871 - Create-next-app update message: #88706 - Turbopack: Fix next/font preloading for page.mdx: #88848 - Update Rspack production test manifest: #88882 - [test] Skip failing deploy test in `searchparams-reuse-loading.test.ts`: #88821 - [test] Skip flaky `prefetch-runtime` tests for deploy tests: #88826 - remove gt workflow from agents.md: #88918 - Turbopack: refactor data storage to avoid reverse task cache: #88492 - Turbopack: change invalidator and immutable to data category: #88889 - Turbopack: reduce cache size: #88929 - fix typo: #88934 - Turbopack: improve module type error message: #88815 - Turbopack: improve selective read support to allow `Equivalent` keys: #88760 - Turbopack: add indirection layer for better caching during resolving: #80062 - Add Graphite workflow Cursor command: #88939 - Update Rspack production test manifest: #88930 - Update Rspack development test manifest: #88931 - Improve performance and token usage of `/ci-failures` command: #88960 - [Turbopack] Use a presized scratch buffer for task encoding: #88924 - Update Rspack development test manifest: #89004 - Update Rspack production test manifest: #89003 - Turbopack: remove Asset supertrait from Module trait. Modules don't have content: #86416 - [test] Improve deployment skew test for Pages Router data routes: #89038 - Fix react-loadable-manifest chunk hash mismatch by preserving async loader mapping: #88775 - Fix reset deploy project script: #89001 - Revert "Fix react-loadable-manifest chunk hash mismatch by preserving async loader mapping": #89073 - /pr-status (former /ci-failures): fetch PR reviews too: #89082 - Improve /pr-status: comments, argument, avoid full log: #89092 - chore(ci): rename 'new tests' jobs to 'new and changed tests': #89054 - [ci] Exclude tests by filename when merging manifests: #89093 - Turbopack: import with type should be handled via condition: #89035 - Enable pnpm dependency caching in e2e deploy tests: #88953 - [ci] Make `gh auth status` optional when triggering a release: #89098 - Update Rspack development test manifest: #89084 - tweak LRU sentinel cache key: #89123 - Turbopack: allow key block without hash in SST files: #88938 - Turbopack: Remove unused argument: #80235 - Prettier-ignore changes in `next-env.d.ts` files in all top-level apps: #89176 - Turbopack: warn when tracing the whole project: #89157 - Add full adapters E2E tests to workflow: #89125 - Update Rspack production test manifest: #89147 - Fix @next/routing for i18n api and dynamic routes: #89197 - Remove Vercel specific assertions from E2E deploy: #89198 - Add custom deploy and logs env for next-deploy: #89206 - Turbopack: change AsyncModulesInfo to use keyed reads: #89216 - Turbopack: selective reads of defined env vars in module analysis: #88759 - Turbopack: fix tracking modifications for transient and data: #89228 - [ci] Clear Jest transform cache: #89247 - Turbopack: Make the globals we pass to workers configurable: #88773 - Accept deploy script and log script as inputs: #89253 - [turbopack] mark persistent_task_type as inline: #89185 - [test] Add test suite name for Tests failures table: #89258 - refactor: Improve templates layout flexibility: #89245 - test: add client-cache.defaults failing deploy test: #89242 - test: add resume-data-cache failing deploy test: #89243 - [turbopack] Make shrinking logic declarative and optimize for immutable tasks: #89222 - Turbopack: Trace task modifications: #89229 - Turbopack: refactor extend transforms: #89116 - Turbopack: improve print_cache_item_size: #89279 - Update Rspack development test manifest: #89278 - Update Rspack production test manifest: #89277 - Improve consistency of how Flag typed fields are handled in the macro to more structurally prevent bugs like what was fixed in #89228: #89255 - Add failing test to deploy-tests-manifest: #89318 - Apply server actions transform to `node_modules` in route handlers: #89316 - [test] Deflake `browser-log-forwarding verbose level` test suite: #89324 - Turbopack: Move PrettyPrintError to turbo_tasks and add tests: #89280 - Update Rspack production test manifest: #89372 - Update Rspack development test manifest: #89371 - TURBOPACK: support chunk_loading_global method: #88790 - Don't upload build cache for deployment tests: #89432 - Add separate E2E deploy env for turbopack tests: #89458 - Turbopack: Symbol.for and keyFor are sideeffect-free: #89454 - Update Rspack production test manifest: #89423 - Update Rspack development test manifest: #89424 - Turbopack: improve suggestions for experimental.reportSystemEnvInlining: #89486 - Add experimental flag to expose testing API in production builds: #89499 - Proper e2e test of function determinism: #88908 - Turbopack: add turbo-persistence benchmark: #89446 - Proper e2e test of function determinism - adapter: #89522 - [test] consolidate the browser log test: #89601 - Fix flaky turbo cache pull with retries and graceful fallback: #89575 - Turbopack: Pass globals to node.js workers as well: #89261 - Upgrade rustc to 2026-02-05: #89591 - Update metadata assertions: #89625 - Update vercel CLI version in flakey deployment-id test: #89652 - Turbopack: remove unneeded benchmarks: #89592 - Turbopack Persistence: Remove amqf cache, store all amqfs in memory: #89562 - Add inline value support for small values (≤8 bytes): #89271 - [turbopack] remove the `_backend` field from TaskGuardImpl: #89015 - [Turbopack] Include CSS URL attributes, including Layer, Media and Supports: #89300 - docs: add task decomposition and verification guidelines: #89640 - Turbopack: Remove old `Vc::try_resolve_*` methods in favor of the `ResolvedVc` alternatives: #89696 - Fix reset-project script for E2E deploy tests: #89693 - feat: move font variables to html in create-next-app: #89632 - reduce the number of shards on small systems: #89731 - Update Rspack production test manifest: #89701 - Update Rspack development test manifest: #89702 - [test] Add regression test for segment cache prefetch memory leak: #89756 - Improve not-found-with-pages test: #89538 - Update flakey E2E deploy tests: #89792 - Update flakey E2E deploy tests no-prefetch: #89799 - Update Rspack production test manifest: #89741 - Fix devlow job timeouts: #89804 - Update Rspack development test manifest: #89740 - Turbopack Persistence: Improve heuristic for compacted database access: #89497 - Turbopack: remove ChunkableModuleReference trait: #89745 - docs: improve Graphite workflow documentation: #89488 - Remove --turbopack and --webpack flags from create-next-app: #89706 - Turbopack: make routes hashes mainfest more incremental: #87107 - [test] Remove references to removed, internal PPR environment variable: #89832 - [test] Enable scroll related tests in Cache Component tests: #83245 - docs: update adapter docs for routing, handlers, and PPR: #89849 - [test] Ensure new deploy test builds have the necessary env variables: #89846 - test: allow dpl query suffix in scss url-global expectation: #89856 - test: stabilize app-dir hash navigation RSC assertion: #89867 - Turbopack: Clean up unused register!() macro argument in test: #89869 - test: allow query suffix in related media URL e2e assertions: #89872 - Update Rspack development test manifest: #89811 - Turbopack: Store task error as pointer to the source error: #89293 - Turbopack: Pass asset_suffix_path as Vc: #89899 - [turbopack] Simplify JS `ChunkItem` with a single impl in most cases: #89548 - Change UrlBehavior.static_suffix to ResolvedVc<Option<RcStr>>: #89921 - [turbopack] Add #[derive(ValueToString)] and convert ~45 manual impls: #89788 - Turbopack hmr: fix missing factories: #89934 - Next-api: Check `client_source_maps` before generate source map: #89915 - Upgrade to swc 56: #89111 - Turbopack: fix CSS dependency locations: #89761 - Enable backtraces in turbopack integration tests: #89935 - Turbopack: Use `std::any::type_name` for global naming of turbo-task items: #89874 - [turbopack] use type_ids to register turbo task traits on value types: #89964 - Turbopack: Fix flake in task_statistics unit test: #89981 - Turbopack hmr: preserve group factory consistency for compressed modules: #89976 - chore: Don't run build-and-deploy CI job on graphite-base branches: #89982 - Turbopack: Update trybuild test dependency from 1.0.104 to 1.0.116: #89986 - test: Isolate read-only-source-hmr test: #86721 - Upgrade Lightning CSS: #88789 - fix(turbopack): --debug-build-paths fails with route groups: #89336 - test: scope e2e timeouts to startup and per-it: #89929 - Always set adapter deploy env variable: #90064 - [turbopack] Fix some modification tracking bugs in TaskStorage: #89708 - bench: render-pipeline benchmarks and stress routes (2/8): #89863 - [turbopack] fix our verify features in turbo-tasks backend: #90013 - Refactor factory not available error message generation: #89897 - [turbopack] Followup for `#[derive(ValueToString)]`: #89936 - Revert "[turbopack] Fix some modification tracking bugs in TaskStorage": #90096 - Disable jest cache for CI instead of wiping: #90097 - next-stats-action: avoid pnpm EXDEV during stats installs: #90100 - [turbopack] Run the deployment tests for turbopack and webpack: #84360 - ci: only cancel pull_request_stats on PR updates: #90104 - [Instant] test: remove unnecessary reactDebugChannel permutation: #90103 - [test] Replace flaky webpack snapshots in `cache-components-errors`: #90105 - Upgrade to swc 57: #90084 - [turbopack] Fix concurrent task lock panic during error formatting: #90056 - Reland "[turbopack] Fix some modification tracking bugs in TaskStorage": #90098 - refactor: fix non-determinism in resolve package: #90058 - Update Rspack development test manifest: #90074 - Update Rspack production test manifest: #90073 - test: extend production-browser-sourcemaps test: #89945 - Turbopack: use file_content.hash() consistently: #90078 - [test] Current behavior of focus after `next/link` navigation: #89959 - Turbopack: Enable tree-shaking for dynamic imports with destructuring: #89683 - test: Don't run integration tests twice for Turbopack : #83335 - Simplify how `json` imports work by turning it into a source transform: #89631 - Update Rspack production test manifest: #90120 - Update Rspack development test manifest: #90121 - Turbopack: Update rust toolchain to nightly-2026-02-18: #89974 - Turbopack: Derive `Default` on `PartialProjectOptions`, remove silly `partial_project_options_with_debug_build_paths` helper: #90170 - Turbopack: document ModuleSideEffects better: #90132 - [ci]: pin styled-components version in tests: #90194 - [turbopack] Add a simple tool to inspect serialized SST files and report on their contents: #89310 - Upgrade React from `4842fbea-20260217` to `2ba30655-20260219`: #90211 - [test] Improve fetch timeout error stack for `act`: #90261 - Turbopack: add Rope.content_hash and SHA hashing: #90235 - [instant] Handle more instant declaration patterns: #90251 - [sync-react] Allow syncing React with local build: #90277 - Add PR tarball install note to stats comment: #90316 - Bump Turborepo to 2.8.9: #90079 - Update wasm and next-custom-transforms crates to Rust edition 2024: #90350 - Turbopack: refactoring to prepare for name mangling: #89406 - Turbopack: Aggregation update improvements: #90139 - [ci] Stop linting auto-generated next-swc typings: #90390 - Add more known folders to is-folder-empty check in create-next-app: #88218 - [ci] Always upload Turborepo summary artifact: #90441 - tests: reenable escheck-output: #90423 - [test] Deflake `typed-routes-validator` using `tsc`: #90451 - test: Cleanup and refactoring: #90454 - [turbopack] Make compression in SST files optional: #89309 - [test] Only auto-retry individual e2e tests in CI: #90464 - Update Rspack production test manifest: #90412 - Update Rspack development test manifest: #90413 - Add @next/playwright package with instant() testing helper: #90470 - [turbopack] Reduce memory usage during compaction: #90229 - [sync-react] Allow syncing from a React commit: #90283 - Turbopack: Add line numbers to debug info in release-with-assertions profile: #90474 - Turbopack: emit env_diff span attribute for update: #90466 - test: unflake lru-disk-eviction on Windows: #90465 - test: Improve test assertions to prepare for dpl query string: #90463 - [test] Fix flaky "delay re-prefetch after revalidation" test: #90503 - Revert "Turbopack: Add line numbers to debug info in release-with-assertions profile (#90474)": #90525 - Bump Turborepo to 2.8.11: #90530 - Turbopack: Move turbopack out of `pnpm build` and into a `pnpm build-all` command: #90543 - Remove revalidation settling period from router-act: #90531 - Turbopack: add webpack loader names to traces: #87230 - Replace mark_root() with #[turbo_tasks::function(root)] flag: #90512 - [test] Deflake `typed-routes-validator`: #90562 - [test] Remove `getStackFramesContent`: #90571 - Replace `testonly` to `testheadless` in AGENTS.md: #90578 - [test] Include error code in Redbox snapshot: #90497 - Turbopack: Add TransientEnvMap to avoid persisting env vars in cache: #90526 - Turbopack: add Xxh3Hash128Hasher: #90584 - [test] Fix error code snapshots when testing with React 18: #90593 - Turbopack: use xxhash3_128 for content hashes: #90583 - test: remove stray TURBOPACK_BUILD=1: #90602 - Update Rspack development test manifest: #90566 - Update Rspack production test manifest: #90565 - [ci] Use `NEXT_TEST_CI` instead of `CI` for e2e test retry guard: #90606 - [test] Skip failing segment-cache deploy test: #90601 - turbo-persistence: drop key compression dictionary from SST files: #90608 - Pre-warm a single NodeJS instance when the next devserver starts: #90174 - Turbopack server HMR: inline source maps for `eval`ed modules: #90561 - test: Run Adapter e2e tests with Turbopack instead: #90600 - Add MemorySample to Turbopack trace infrastructure: #90597 - Use `VisitMut` instead of `Fold` for debug_instant_stack transform: #90274 - Ensure we only run main test mode with custom deploy script: #90665 - Centralize test timings to fix shard divergence in CI: #90672 - tests: Fix immutableAssetToken extraction: #90668 - turbo-persistence: streaming SST writer for reduced memory usage: #90617 - Add custom cleanup script support for deploy tests: #90696 - Use commit-based tarball URL in PR stats comment: #90709 - [ci] Use commit instead of PR number for preview builds in deploy tests: #90722 - Fix ENOBUFS errors in pr-status.js when fetching large CI logs: #90654 - Publish @next/playwright to npm as part of canary releases: #90738 - Update Rspack development test manifest: #90751 - Update Rspack production test manifest: #90750 - Turbopack: improve cell order lint rule for TraitRef::cell: #90756 - Add determinism test for static shell with asset preload headers: #89826 - Add static error when `unstable_instant` is used without `cacheComponents`: #90793 - enable server action RDC deploy test: #90796 - turbo-persistence: StreamingSstWriter performance and readability improvements: #90692 - pr-status: add reply-thread and resolve-thread subcommands: #90773 - [turbopack] Don't schedule idle snapshots when we are in a short session: #90804 - Update Rust dependencies for turbo-persistence and turbo-tasks-backend: #90774 - Add support for multi-valued tables: #89728 - pr-status: add --wait flag and background execution for /pr-status command: #90687 - exempt data URL CSS from Pages Router global CSS restriction: #89901 - turbo-persistence: add CRC32 block checksums: #90754 - Remove unused turbo-tasks items and add lint check: #90801 - Fix missing const generic parameter in turbo-persistence lookup call: #90817 - Turbopack: add anyhow::Context to turbo-persistence mmap, file open, and decompress operations: #90769 - Update Rspack development test manifest: #90805 - Avoid using TaskTypes as keys in storage instead use hashes: #88904 - Remove leaf segment force-refetch check: #90836 - [turbopack] add a new hasher implementation to eliminate allocations: #89059 - Show labeled steps for `instant()` test helper in the Playwright UI: #90664 - [turbotask] Make turbotask function registration const: #90797 - Turbopack: turbofmt/turbobail macros: #90092 - Add Err(anyhow(... ast-grep rule: #90869 - Turbopack: allow resolving TS files in tailwind config: #90046 - Unify Node and Edge externals list: #90819 - chore: add aurorascharff to devex team labeler config: #90866 - Update Rspack production test manifest: #90857 - Update Rspack development test manifest: #90858 - [ci]: continue-on-error for more gh auth status checks: #90890 - Cleanup non-generic assertions in our deploy test suite: #90894 - Turbopack: Tree shaking fixes and code organization: #89295 - tests: Use pnpm dlx to install latest CLI version: #90923 - Turbopack: Fix some eventually consistent reads at the top level in dev-server and snapshot tests: #90792 - Turbopack: Annotate ReadVcFuture as must_use instead of annotating functions that return it: #90839 - Prefix pr-status replies with :robot: emoji: #90943 - Set DontFork and Unmergeable on all mmap sites in turbo-persistence: #90941 - Turbopack: CompileTimeDefineValue numbers and regex: #90934 - Turbopack: pass reference type to CustomModuleType: #90814 - Fix preview version in `window.next.version` for PR builds: #90937 - [Evals] Standardize Evals in Next.js: #90883 - TURBOPACK: alias resolve lost query param: #88891 - Update Rspack development test manifest: #90969 - Turbopack: Make `ReadVcFuture::strongly_consistent` private: #90843 - Fix next-routing header interpolation: #91010 - Turbopack: accept ChunkGroup in entry_chunk_group: #90821 - Turbopack: show specific SWC error messages as error titles: #91022 - Turbopack: correctly use ChunkGroup::Shared: #90978 - Add script to patch project with preview tarball URLs: #91057 - Fix pr-status script missing failed jobs on page 2+ of API results: #91087 - Turbopack: don't panic due to eventual consistency in module merging: #91088 - fix: run lerna on a branch: #91092 - Fix preview tarball script to include @next/swc-linux-x64-gnu: #91099 - Improve unsafe code safety documentation in turbo-tasks-backend: #90755 - docs(contributing): Update setup in contributing/core/developing.md: #91018 - Turbopack: Pass hmr_enabled to ImportMetaBinding: #91118 - docs(turbopack): Copy over turbopack-trace-server docs: #91111 - Turbopack: introduce `ReferenceTypeCondition`: #91101 - fix: Use a pnpm preinstall script to fix catch-22 in next binary creation: #91016 - Exclude partial fallback for deploy mode: #91163 - [turbopack] Add support for fixed key blocks: #90844 - [turbopack] Encode task storage directly during persistence (skip clone): #89412 - [turbopack] hashing improvements to turbo-persistence: #90936 - [turbopack] Move empty snapshot filtering into take_snapshot: #90166 - docs(turbopack): Merge old turbo-tasks concept mdbook page with crate's top-level rustdoc: #91120 - Add RDC action test to deploy manifest and update PR test trigger: #91173 - [Turbopack] Don't attempt to compress key blocks containing small keys: #90881 - Lint against `.context(format!(...))`: #91122 - fix(turbopack): unref ThreadsafeFunctions to allow Node.js exit after build: #91107 - remove worktrees accidentally committed in #90166: #91215 - Fix syntax contexts in server action transform: #91210 - docs(turbopack): Merge the contents of the "cells" page in the mdbook with our rustdocs: #91126 - TURBOPACK: typescript transform support verbatimModuleSyntax: #90907 - [ci] Disable test-level retries during flakiness detection: #91261 - [cna] Bump vendored `json-schema-types`: #91255 - Remove sequential madvise for compressed blocks in StaticSortedFile: #91263 - docs(turbopack): Move mdbook "tasks" docs over to `turbo_tasks::function` rustdoc: #91132 - test-new-tests: enable adapter in deploy flow: #91269 - Revert "Exclude partial fallback for deploy mode": #91172 - [test] Properly log `framereceived` payload: #91266 - docs(turbopack): Merge task input docs from mdbook into rustdocs: #91136 - bundle-analyzer: merge _app route modules into current route visualization: #90841 - docs(turbopack): Migrate docs about traits from mdbook to rustdocs: #91170 - Remove LMDB backend and ReadTransaction abstractions from turbo-tasks-backend: #91284 - docs(turbopack): Move singleton pattern documentation from mdbook to rustdoc: #91175 - Turbopack: rename CSS module structs for clarity: #91304 - [test] Deflake `instant-navs-devtools`: #91256 - Delete blob files during compaction when entries are superseded: #91314 - [test] Resolve stale merge issues: #91329 - Turbopack: Remove the IntoTraitRef trait, make it an inherent method on Vc: #91223 - re-enable RDC deployment tests: #91327 - Use keyed cells for used_exports and export_circuit_breakers in BindingUsageInfo: #91306 - [test] Show decoded binary WebSocket messages in traces: #91308 - Docs skills: guide and api-reference: #90992 - Turbopack: switch chunk/asset hashes from hex to base40 encoding: #91137 - Turbopack: don't emit polyfill chunk for API routes: #91331 - [test] Current behavior for request APIs in `generateStaticParams`: #91188 - Update Rspack production test manifest: #91301 - Update Rspack development test manifest: #91300 - Turbopack: Remove old macos-compress script: #90967 - disable sub shell generation test outside of adapter: #91353 - Turboopack: put import attributes behind a pointer, 23% faster analyze: #91347 - Turbopack: `require(/* turbopackChunkingType: parallel */`: #91278 - Turbopack: use keyed cell access for AsyncModulesInfo: #91305 - Enable thin LTO for release builds: #91343 - [turbopack] const-ify most of the registration code: #90868 - [test] Improve actions-tree-shaking tests: #91326 - Move database compaction from write batch commit to backend idle loop: #91258 - Turbopack: use ChunkGroupEntry::Shared, part 2: #91279 - [test] More `instant-navs-devtools` deflaking: #91345 - Turbopack: Enable server HMR by default for app pages: #91476 - Allow blocking cross-site dev-only websocket connections from privacy sensitive origins: #91479 - Fix DataUriSource description to include "data:" prefix: #91455 - Deflake per-page dynamic stale time test: #91492 - Improve RSC error messages: #90702 - Improve CSS parse error recovery and reporting: #90025 - perf(turbopack-node): zero-copy Buffer transfer from node to rust: #91376 - docs(turbopack-core): Copy "layers" documentation from mdbook to rustdoc: #91350 - Turbopack: correctly apply effects for issue snapshots: #91511 - Turbopack: treat unknown CSS selectors as warnings: #91513 - docs(turbopack): Migrate chunking docs from mdbook, with proof-reading and minor updates from claude: #91472 - Skip catch-error-react-compiler test to unblock CI: #91528 - [turbopack] update qfilter to 0.3.0-alpha: #91467 - Unflake two `"use cache"` tests: #91529 - docs(turbopack): Remove old `architecture.md` file from turbopack crate: #91473 - [turbopack] Share scratch buffer across shards using thread local: #90167 - Turbopack: Use `debug = "line-tables-only"` for dev builds: #91539 - Unflake router events deploy test: #91589 ### Credits Huge thanks to @icyJoseph, @nextjs-bot, @sokra, @Juneezee, @delbaoliveira, @wbinnssmith, @ztanner, @lukesandberg, @bgw, @naveenkarmegam, @Marukome0743, @pji2918, @nathannewyen, @eps1lon, @ijjk, @feedthejim, @vercel-release-bot, @xusd320, @huozhi, @mischnic, @wyattjoh, @styfle, @timneutkens, @unstubbable, @lubieowoce, @gnoff, @acdlite, @Rani367, @andrewimm, @brookemosby, @karlhorky, @kdy1, @mmastrac, @naaa760, @jgeschwendt, @williambout, @SimeonGriggs, @gaojude, @hanzala-sohrab, @dango0812, @msmx-mnakagawa, @davidgolden, @LucianBuzzo, @devjiwonchoi, @alexcarpenter, @jaffarkeikei, @BradErz, @mintydev789, @Suhaib3100, @pavan-sh, @amannn, @fireairforce, @JamBalaya56562, @wheresrhys, @ericrav, @Thomas465xd, @bgub, @Netail, @robert-j-webb, @bencmbrook, @shadcn, @sigmachirality, @abhishekmardiya, @vvscode, @freek-boon-greenberry, @alubbe, @FurryR, @01-binary, @andrewdamelio, @swarnava, @kristiyan-velkov, @haydenbleasel, @rishishanbhag, @tdarthur, @lavanitha, @agneliutkiene, @Mimori256, @pieh, @sleitor, @jantimon, @clicktodev, @mitul-s, @aurorascharff, @shuding, @jonasherr, @thdxg, @kowyo, @samselikoff, @dependabot, @benfavre, @zamadye, @cursor, and @richardjzhang for helping!