# Next.js v16.5.0-canary.39 — Release & Upgrade Intelligence
- **Product:** Next.js (https://nextjs.org)
- **Version:** v16.5.0-canary.39
- **Released:** Nov 03, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/nextjs/updates/v16.5.0-canary.39/

## Executive Summary (TL;DR)
Next.js v16.5.0-canary.39. Source highlight: Strip internal middleware cookie headers from edge responses: #101109

## New Features
- Turbopack: keep CSS Modules when a loader rule's `as` adds an existing extension: #101065
- Add segment config parity regression tests: #100881

## Bug Fixes
- Fix stale compressed framing for forwarded fetch responses: #101108
- [use cache] Fix cache key when binary args are used: #101107
- Fix shared shell poisoning from request-supplied placeholder params: #101106
- [next/image] Fix false-positive AVIF/HEIC detection: #101105
- Fix `unstable_cache` leaking cold `'use cache'` fills across root params: #101104
- Fix outer 'use cache' entries reused across root param values: #101103