Add handling for domain to locale mapping: #17771
Make sure locale detecting is case-insensitive: #17757
Fix a couple i18n cases: #17805
Font optimization for webpack 5: #17450
Allow pages to be async modules to enable top-level-await: #17590
Update redirect handling for locale domains: #17856
Image component foundation: #17343
chore(collect-plugins.ts): removes duplicated entries: #17441
Resolve to real path before checking for path inequality: #17279
Handle preferring default locale over accept-lang preferred locale: #17883

Last checked 3 Oct 2026, 11:23 UTC

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10.0.0

Breaking signals27 Oct 2020GitHub Release

Potential breaking changes

The release increments the stable major version.
9.5.5 → 10.0.0

Core Changes

Add handling for domain to locale mapping: #17771
Make sure locale detecting is case-insensitive: #17757
Fix a couple i18n cases: #17805
Font optimization for webpack 5: #17450
Allow pages to be async modules to enable top-level-await: #17590
Update redirect handling for locale domains: #17856
Image component foundation: #17343
chore(collect-plugins.ts): removes duplicated entries: #17441
Resolve to real path before checking for path inequality: #17279
Handle preferring default locale over accept-lang preferred locale: #17883

Add locale prop for transitioning locales client side: #17898

Make sure that params are properly passed to hybrid amp pages: #17461

Add i18n items to routes manifest: #17893

Add support for returning 404 from getStaticProps: #17755

Ensure i18n support with AMP: #17923

Call Web Vitals reporting at correct time: #17933

Fix initialRevalidateSeconds manifest field with i18n: #17926

Add support for Image Optimizer: #17749

Add missing next/image package file: #17940

Only load plugins with @next prefix: #17945

Update default configuration to match image optimization: #17943

Fix width param name for Image Optimizer: #17952

Unify config.image.breakpoints to config.image.sizes: #17953

Improve types for Image Component: #17954

Add perf data experiment: #17956

Make sure w parameter is only included when a width is provided.: #17971

Image component lazy loading: #17916

Make sure animated assets aren't de-animated by optimizer: #17974

Fix types for lazy image component: #17984

Update to postcss-loader 4.0.2.: #17458

Update handling for relative files in image-optimizer: #17998

Ensure correct default locale is detected for domain locale: #18046

Remove multi-host support for image component and support quality pass-through: #18038

Add width and height props to Image component: #18031

Ensure root index GSP page's revalidate is recorded: #18053

Update resolve-url-loader to fix vulnerability: #18064

Pass locales to getStaticPaths for i18n: #18077

Add unsized property to Image component: #18059

Fix css dependency in /_error: #17301

Move sharp to optionalDependencies: #18068

Update to PostCSS 8.: #17415

Update peerdependency to account for React 17: #18089

Upgrade to Chokidar 3.: #17558

Upgrade @ampproject/toolbox-optimizer: #18087

Fix precompiled code: #18093

Image Component: Support for Akamai image CDN: #18100

Fix Image component defaults & remove autoOptimize: #18101

Fix merge conflict: #18106

Update fallback 404 handling to prevent reload loop: #18119

Make lazy-loading the default for next/image: #18123

Add locale false handling: #18115

Bypass image optimization for vector images: #18179

Add support for string width/height on Image component: #18178

Fix flashing of no-src image when using next/image: #18195

Bump styled-jsx to 3.3.1: #18200

Ensure 404 with SSG is rendered correctly with notFound: #18205

Update use-subscription to account for React 17 peerDependency: #18199

Separate config into deviceSizes and iconSizes (#18267)

Add config limit checks for image optimizer (#18217)

Fix Image srcset to ensure the component's width is the largest possible image (#18236)

Add next/image default loader errors (#18152)

Image Optimization API should 404 when loader is not default (#18211)

Adjust configuration option placement: #18279

Remove unstable_ prefix from unstable_blocking: #18276

Fix browser back issue of redirects from getServerSideProps / getStaticProps: #17741

Add support for notFound in getServerSideProps: #18241

Improve type for GSP return type: #18285

Remove unstable_ prefix from unstable_redirect: #18282

Re-add domain locale redirect handling: #18274

Remove unstable_ prefix from unstable_notFound: #18283

Add fetching 404 SSG data on fallback notFound: #18214

Expose configured default locale in GS(S)P methods: #18216

Adjust default image quality to 75: #18292

Add support number quality on Image Component: #18224

Rename iconSizes to imageSizes, remove size limitation: #18294

Record leveraged configs: #18175

Fix trailing slash for default image loader: #18298

Ensure getStaticProps is called for SSG 404 in blocking mode: #18300

Enable feature flag: #18303

Documentation Changes

Fix grammatical typo in docs: #17779
Fix broken url caused in docs: #17789
Fix higherOrderComponent causing broken layout: #17812
docs: Clarify use of getStaticProps / getServerSideProps with app / document: #17839
Add use-npm CLI flag docs: #17803
(docs) Fixes for "Migrating from Gatsby" doc: #17858
Capitalize Data Fetching title in docs: #18001
Fix typo in headers docs example: #18012
Add initial i18n documentation: #18067
Add docs for Image Optimization: #18107
Fix image optimization docs (#18254)
Add i18n routing docs to manifest: #18264
Add absolute import example: #17342
Update example link text: #18286
update @now/next to @vercel/next: #18246
Update docs - add default config for images property: #18296

Example Changes

Improve with-tailwindcss example: #17742
feat(example): added missing prisma.io examples: #17896
Fixed link for expo: #17908
Fix with-mongodb hot-reload issue and race condition: #17666
Updated dependencies for example: with-react-native-web: #17375
Add with-facebook-pixel example: #17667
Update step 5 to Strapi example Readme: #17985
Use ya in case xa is false: #18074
Add initial example for i18n routing: #18206

Misc Changes

Stabilize i18n fallback test: #17957

Credits

This release was brought to you by the contributions of: @ijjk, @adebiyial, @elliottsj, @saintmalik, @HaNdTriX, @prateekbh, @amirsaeed671, @paambaati, @imagentleman, @gregrickaby, @Janpot, @atcastle, @Kirkhammetz, @remorses, @davidsonsns, @kmkzt, @slawekkolodziej, @Timer, @styfle, @timneutkens, @ykzts, @ashconnell, @orYoffe, @lfades, @justinwhall, @fbaiodias, @ludofischer, @felipeguilhermefs, @gr-qft, @TasukuUno, @YichiZ, @weichienhung, @seosmmbusiness, @HsuTing, @gsimone, @peduarte, @ztanner, @neighborhood999, @chibicode, @merceyz, @opudalo, @lunchboxav, @mohsen1, @akd-io, @justman00, @helloworld, @devknoll, @borekb, @ArthurMaverick, @sakito21, @TrySound, @omBratteng, @svenheden, @hallaji, @kettanaito, @vvo, @m-lautenbach, @jensmeindertsma, @Zeko369, @longlho, @stefanprobst, @laugharn, @sdornan, @daneroo, @mohd-akram, @austingmhuang, @sphilee, @devinekadeni, @Bacher, @nghiepit, @tomasdisk, @leader22, @paulogdm, @284km, @belgattitude, @geritol, @stigkj, @sampoder, @samrobbins85, @Pitasi, @digitalPlayer1125, @timfee, @plug-n-play, @philihp, @leerob, @dylanjha, @Kerumen, @rdimaio, @jorisw, @zerbinidamata, @jamesgeorge007, @Jashnm, and @futantan!

10.0.0#

Potential breaking changes

Core Changes

10.0.0#

Potential breaking changes

Core Changes

Documentation Changes

Example Changes

Misc Changes

Credits

10.0.0

10.0.0