v15.6.0-canary.8

Core Changes

• [Breaking] Flat config as default in @next/eslint-plugin-next: #83763
• fix: Rspack splitChunks.chunks regex: #83670
• Revert "Turbopack: Remove matchers.reload() call on each request": #83819
• fix: unstable_cache should perform blocking revalidation during ISR revalidation: #83820

Misc Changes

• docs(metadata): align default function export name with file name: #83796
• [turbopack] Remove the should_track_children parameter of the turbo tasks backend: #83258
• docs(data-security): add bun package manager example: #83735
• Update next-intlayer reference in i18n doc: #83761
• Update Rspack production test manifest: #83790
• Update Rspack development test manifest: #83791

Credits

Huge thanks to @dwrth, @lukesandberg, @obendev, @aymericzip, @devjiwonchoi, @SyMind, @vercel-release-bot, @timneutkens, and @ztanner for helping!

v15.6.0-canary.7

Core Changes

• Turbopack: Remove matchers.reload() call on each request: #83720

Credits

Huge thanks to @timneutkens for helping!

v15.6.0-canary.6

Core Changes

• [OTel] fix: Root span name should not include high cardinality URL: #75416

Misc Changes

• Emit build error when 'use cache' directive is misspelled: #83756

Credits

Huge thanks to @povilasv and @unstubbable for helping!

v15.6.0-canary.5

Core Changes

• Upgrade React from f3a80361-20250911 to 93d7aa69-20250912: #83729
• Upgrade React from 93d7aa69-20250912 to 8a8e9a7e-20250912: #83742
• Fix reentrancy of unhandledRejection filtering: #83741
• Fix type for unhandled rejection handler process.removeListener: #83748

Misc Changes

• [Turbopack] Remove ssr-data module context: #83626
• CI: use KV for test timing data: #83745

Credits

Huge thanks to @lukesandberg, @ztanner, and @gnoff for helping!

v15.6.0-canary.4

Core Changes

• Fix index data route for adapter build-complete: #83730
• Remove leading underscore for unhandledRejection envvar: #83732

Credits

Huge thanks to @ijjk and @gnoff for helping!

v15.6.0-canary.3

Core Changes

• fix: dev should produce the correct default fallback regex to match builds/Turbopack: #83701
• [devtool] fix overlay styles are missing: #83721
• Revert "Remove clientParamParsing requirement from RDC for Navigations": #83725
• Only enable unhandledRejection filtering when opted in: #83726

Misc Changes

• tests: disable flaky deployment test while investigating upstream: #83705
• [test] Update snapshots for Rspack + React 18: #83712
• Docs/sep paper cuts: #83689

Credits

Huge thanks to @ztanner, @unstubbable, @icyJoseph, @huozhi, and @gnoff for helping!

v15.6.0-canary.2

Core Changes

• Remove clientParamParsing requirement from RDC for Navigations: #83661
• Upgrade React from 6b70072c-20250909 to 886b3d36-20250910: #83650
• Turbopack: Use readFileSync / writeFileSync for manifest writing: #83694
• Upgrade React from 886b3d36-20250910 to f3a80361-20250911: #83696
• Don't create client-side debug channel if the feature is disabled: #83699

Misc Changes

• [CI] Fix GitHub Actions matrix configuration for React versions: #83677
• fix(Turbopack): Enable scope hoisting for large files or module counts: #83399
• [turbopack] Lazily construct resolved::Requests for EsmAssetReference: #83662
• Update content-security-policy.mdx, fix development environment error: #83665

Credits

Huge thanks to @unstubbable, @wyattjoh, @Cy-Tek, @timneutkens, @lukesandberg, and @OoMNoO for helping!

v15.6.0-canary.1

Core Changes

• Development: Don't import app-router / hot-reloader through next/link in application code: #83656

Misc Changes

• Turbopack: Only load capsize-font-metrics once: #83654

Credits

Huge thanks to @timneutkens for helping!

v15.6.0-canary.0

Misc Changes

• Turbopack: remove css_environment from Environment: #83487
• Turbopack: Don't add client_runtime_entries to Route Handler compilation: #83655

Credits

Huge thanks to @mischnic and @timneutkens for helping!

v15.5.3

Note

This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• fix: validation return types of pages API routes (#83069)
• fix: relative paths in dev in validator.ts (#83073)
• fix: remove satisfies keyword from type validation to preserve old TS compatibility (#83071)

Credits

Huge thanks to @bgub for helping!