Update react-server-dom-webpack: #40356
Fix flight manifest to include all chunks: #40365
docs: fix typos: #40342
Fix page url for edge routes in app dir: #40361
Subresource Integrity for App Directory: #39729
Stop build warning about experimental: { esmExternals: 'loose' }: #40377
Add template and error file types: #39808
Bump styled-jsx for showing displayName: #40411
fix(#40388): next/dynamic should only add default loading without suspense: #40397
Add missing trace for full reload event: #40393
feat(ts): expose AppType: #40391
Update dev watcher to ignore more accurately: #40412
Add failing case for location throw: #40445
Drop legacy RSC handling in client for pages: #40472
fix: eslint no-script-component-in-head error url: #40422
chore: Update swc: #40292
feat(edge): allows configuring Dynamic code execution guard: #39539
Rename allowDynamic to unstable_allowDynamic:

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Last checked 2 Oct 2026, 01:02 UTC

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12.3.1

19 Sept 2022GitHub Release

Core Changes

Update react-server-dom-webpack: #40356
Fix flight manifest to include all chunks: #40365
docs: fix typos: #40342
Fix page url for edge routes in app dir: #40361
Subresource Integrity for App Directory: #39729
Stop build warning about experimental: { esmExternals: 'loose' }: #40377
Add template and error file types: #39808
Bump styled-jsx for showing displayName: #40411
fix(#40388): next/dynamic should only add default loading without suspense: #40397
Add missing trace for full reload event: #40393
feat(ts): expose AppType: #40391
Update dev watcher to ignore more accurately: #40412
Add failing case for location throw: #40445
Drop legacy RSC handling in client for pages: #40472
fix: eslint no-script-component-in-head error url: #40422
chore: Update swc: #40292
feat(edge): allows configuring Dynamic code execution guard: #39539
Rename allowDynamic to unstable_allowDynamic:

#40496

Don't execute prefetches for bot user agents: #40435

Update semver of eslint-plugin-react: #40246

Clean up startTransition in Link: #40505

docs(README): next.js logo with dark mode: #40223

Passing down original sourcemap for flight client loader: #40508

next/script: make onLoad concurrent rendering resilient: #40191

chore: Update swc: #40520

Add missing feature in next-swc: #40550

Mask Flight Parameters from Middleware: #39939

Unwrap promise with experimental_use: #40575

fix(next/router): Prevent query delete in routing when next.config basePath option is truthy: #40566

fix(image): handle image imports with high aspect ratio: #40563

fix: loosen webpack compilation with fallbackNodePolyfills: false: #40612

Adding experimentalAdjustFallback feature to font optimization: #40185

fix: handle notFound: true in / with next export: #40592

refactor: split up CONTRIBUTING.md: #40515

Implement SWC transformer for server and client graphs: #40603

Fix edge wasm handling during deploy: #40625

Client directive: #40415

Remove internal client next api detection: #40646

Attach module trace for RSC related errors: #40652

Use createFromFetch instead of createFromReadableStream to fetch Flight: #40656

Change Flight response content type to application/octet-stream: #40665

Send web vitals to Vercel analytics in app: #40669

Refactor fetchServerResponse: #40674

Port page and layout level API assertions to SWC transform: #40653

Ensure smooth scroll is disabled for navigation in new and existing router: #40642

Upgrade to latest React experimental: #40672

Refine error messages: #40661

Incldue styled-jsx in swc compiling: #40679

misc: update caniuse-lite to latest: #40680

Remove non existed exports and files: #40685

fix(image): preload should respect crossOrigin: #40676

Add handling for static generation in app: #40561

Avoid direct React client API imports in the server graph: #40686

Drop legacy RSC server and client extension: #40692

Documentation Changes

docs: fix middleware path: #40340
Fix mdx docs: #40402
Update Server Components documentation.: #40452
docs: move swcMinify: true out of "Experimental features" section: #40394
Clarify use of loading property: #40488
docs(errors/large-page-data): how to see data being passed to page: #40491
docs(basic-features/script): update script version history: #40263
Added "negative matcher" documentation: #40282
Fix a typo in docs: #40501

Example Changes

chore: fix examples: #40395
chore(examples): update turborepo examples link: #40487
update(examples): Emotion modules: #40242
Added comments to middleware-matcher example: #40273
Remove legacy mobx example: #40304
Update cms-makeswift example: #40560
Fixed typo: #40608
Revert "Fixed typo": #40623
chore: Migrate with-prefetching example to typescript: #40671
chore: Refactor active-class-name example: #40670
docs(examples): fix error connection handling: #40633

Misc Changes

Temporarily disable unstable app test: #40408
docs(middleware): fix broken link
chore: use link: instead of file: in CONTRIBUTING.md: #40510
add Balázs as codeowner to /errors/ directory
fix(cli): tune filter for extracting example .tar: #40513
Add additional tests for prefetch and trailingSlash: #40517
Wrap parallel routes tests in describe: #40546
fix(#40025): run next/script beforeInteractive test in both dev & prod: #40541

Credits

Huge thanks to @huozhi, @shuding, @ijjk, @jasham, @Kikobeats, @wyattjoh, @rubytree33, @timneutkens, @balazsorban44, @andrewrjohn, @SukkaW, @hanneslund, @leerob, @Djo1e, @kdy1, @msafi, @tknickman, @feugy, @cramforce, @ryparker, @victorboucher, @steven-tey, @JDansercoer, @janklimo, @hiro0218, @HaNdTriX, @migueloller, @flex-kyunghwa, @saalimzafar, @alxhotel, @janicklas-ralph, @feedthejim, and @chornos13 for helping!

12.3.1#

Core Changes

12.3.1#

Core Changes

Documentation Changes

Example Changes

Misc Changes

Credits

12.3.1

12.3.1