Core Changes

• Add internal environment variable for enabling React Compiler: #84176
• [devtools] Disable React's default Transition indicator: #84202
• Upgrade React from e2332183-20250924 to b0c1dc01-20250925: #84248

Example Changes

• docs: update Dockerfile to use node:lts-alpine instead of node:18-alpine: #84229

Misc Changes

• Turbopack: increase retry duration, reduce busy looping when there is other work: #84171
• Turbopack: Try to avoid block_in_place in scope: #84172
• [turbopack] Remove some bitmap clones: #84193
• Turbopack: lazier manifests, part deux: #84191
• Turbopack: avoid panic on updating output when a task was cancelled: #84214
• docs: nav_title for long unbroken words: #84233
• Turbopack: Use RawValue for mappings inside SourceMapJson: #84208
• Update Rspack development test manifest: #84218
• Turbopack: fix NFT of readFileSync of relative path: #84155
• Turbopack: improve references benchmark: #84223
• Update Rspack production test manifest: #84217
• Turbopack: drop ASTs when only tracing: #84185
• docs: Include more detailed instructions on excluding from common AV solutions, including macOS Gatekeeper: #84206

Credits

Huge thanks to @sokra, @lukesandberg, @eps1lon, @mischnic, @Samii2383, @icyJoseph, @bgw, and @vercel-release-bot for helping!