# Deno v1.28.3 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v1.28.3
- **Released:** Dec 01, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v1.28.3/

## Executive Summary (TL;DR)
Deno v1.28.3. Source highlight: Revert "fix(ext/flash): graceful server startup/shutdown with unsettl…

## New Features
- feat(core): send "executionContextDestroyed" notification on program end
- feat(core): show unresolved promise origin (#16650)
- feat(core): support initializing extensions with and without JS (#16789)
- feat(ops): fast calls for Wasm (#16776)
- feat(ops): support raw pointer arguments (#16826)
- feat(unstable): rework Deno.Command (#16812)

## Improvements
- perf(ops): Reenable fast unit result optimization (#16827)

## Bug Fixes
- Revert "fix(ext/flash): graceful server startup/shutdown with unsettl…
- fix(cli/js): improve resource sanitizer messages (#16798)
- fix(coverage): Error if the emit cache is invalid (#16850)
- fix(ext/ffi): Null buffer pointer value is inconsistent (#16625)
- fix(ext/node): allow absolute path in createRequire (#16853)
- fix(ext/web): fix typings for readable stream readers (#16191)