Core Changes

• Unify Link and Form prefetching: #76184
• Turbopack: Ensure server actions sourcemaps tests pass: #76157
• [dev-overlay] control dark theme in one place: #76528
• [dev-overlay] change css var for terminal: #76590
• [dev-overlay] Discriminate stack frame settled typed: #76517
• Remove obsolete sourcePackage references: #76550
• refactor: remove unused variable in externals handling: #76599
• fix: Add popular embedding libraries to serverExternalPackages: #76574
• [Segment Cache] Implement hash-only navigations: #76179
• Webpack: abstract away getting compilation spans: #76579
• report compiler duration for webpack and improve numbers: #76665
• [dev-overlay] fix dark theme missing close bracket: #76672
• Remove revalidate property from incremental cache ctx for FETCH kind: #76500
• [dev-overlay] fix: env name label style was out of sync with error type label: #76668
• Turbopack: avoid celling source maps before minify: #76626
• refactor(CI): Merge all four bundler test manifest scripts into one: #76652
• [metadata] fix duplicate metadata for parallel routes: #76669
• [Segment Cache] Omit from bundle if flag disabled: #76622
• [Segment Cache] Support output: "export" mode: #75671
• [Segment Cache] Refresh on same-page navigation: #76223
• [metadata] re-enable streaming metadata with PPR: #76119
• [Segment Cache] Search param fallback handling: #75990
• [Segment Cache] Fix: canonicalURL omits origin: #76444
• fix metadata basePath for manifest: #76681
• Propagate expire time to cache-control header and prerender manifest: #76207
• Show revalidate/expire columns in build output: #76343
• Gate alternate bundler behind canary only: #76634
• [dynamicIO] routes with dynamic segments should be able to be static in dev: #76691
• [repo] upgrade ts 5.8.2: #76709
• [metadata]: ensure metadata boundary is only rendered once on client nav: #76692
• [metadata] clean up redudant options: #76712
• Fix uniqueness detection for generateStaticParams: #76713
• Upgrade React from 22e39ea7-20250225 to d55cc79b-20250228: #76680
• [Turbopack] Compute module batches and use them for chunking: #76133
• [Dev Tools] Improve keyboard interactions for menu & overlays: #76754
• Keep server code out of browser chunks: #76660
• Turbopack: inline minify into code generation and make it a plain function instead of a turbo tasks function: #76628
• fix edge runtime asset fetch in pages api: #76750
• Update use-cache-unknown-cache-kind.test.ts snapshot for alternate bundler: #76682

Example Changes

• docs: fix reading params code blocks: #76705

Misc Changes

• fix(rustdoc): Fix rustdoc warnings, block on rustdoc failures in CI: #76448
• Update more global turbo CLI usage: #76576
• docs: Node.js runtime support for Middleware: #76556
• build: Update swc_core to v16.0.0: #76414
• Turbopack: prevent panic in swc issue emitter: #76595
• Unflake parallel-routes-revalidation test: #76600
• Fix octokit.rest.issues.addLabels call: #76601
• [test] Use new Redbox matchers in app/ error-recovery: #76552
• [test] Use new Redbox matchers in pages/ ReactRefreshLogBox-app-doc: #76551
• Run nightly bundler integration tests also with React 18: #76606
• 15.2: Add version history for devIndicators and note on deprecated options: #76611
• 15.2 docs: document missing htmlLimitedBots option: #76616
• Update bundler production test manifest: #76584
• Update bundler development test manifest: #76585
• Fix test after CI switched to pnpm 10: #76615
• chore(cna): fix theme extend for tailwind v4: #76583
• [test] Use new Redbox matchers in app/ ReactRefreshLogBoxMisc: #76563
• Don’t use native built-ins for additional bundler: #76577
• Revert "Run nightly bundler integration tests also with React 18": #76640
• Update bundler production test manifest: #76643
• Update bundler development test manifest: #76644
• Turbopack: dedupe middleware-manifest entries: #76621
• Turbopack: Improve edge tests: #76607
• Turbopack: add test test for css order: #76675
• Turbopack: fix order of chunk items in cycles: #76676
• [ci] Fix test-turbopack-integration not having any shards : #76355
• Update Turbopack development test manifest: #76658
• Update Turbopack production test manifest: #76659
• fix(CI): Upload to areweturboyet immediately after a manifest is updated, not only on a fixed cron schedule: #76688
• Update test snapshots for alternative bundler [4/n]: #76578
• fix(turbopack): Fix analysis of private properties: #76654
• Turbopack: Simplify emitDecoratorMetadata test: #76678
• [test] Use new Redbox matchers in pages/ ReactRefreshRegression: #76743
• [test] Remove describeVariants helper: #76631
• [test] Fix flaky error-recovery test: #76753
• [test] Use new Redbox matchers in app/ dynamic-error: #76744
• [test] Use new Redbox matchers in app/ rsc-runtime-errors: #76745
• Turbopack: avoid panic in module batches: #76757
• Revert "test: temporarily disable after deploy test": #74990
• toDisplayRedbox(): replace all occurrences of testDir: #76618
• Fix: missing close brace in demo code: #76549
• Disable flaky Turbopack tests: #76760
• feat(CI): Revalidate vercel data cache on areweturboyet after uploading data to KV store: #76693
• chore(github): move top prs and feature requests to different Slack channel: #76764
• Fix flaky Bun test: #76763

Credits

Huge thanks to @acdlite, @bgw, @ijjk, @molebox, @kdy1, @timneutkens, @devjiwonchoi, @mischnic, @unstubbable, @eps1lon, @huozhi, @philipithomas, @delbaoliveira, @samcx, @wbinnssmith, @sokra, @gnoff, @leerob, @ztanner, @raunofreiberg, @lubieowoce, and @LihaoWang for helping!