Core Changes

• Fix: CSS asset URLs broken with experimental.inlineCss: #85140
• Update routes generation for build-complete: #85017
• [cache components] move experimental.cacheHandlers out of experimental: #85157
• Don't assign displayName to the internal Promises: #85178
• Assign name to hydration stream: #85179
• fix: add backwards compat for middleware → proxy field renames: #85183
• [turbopack] Implement improved deobfuscation for free calls and module identifiers.: #85060
• Improve Proxy invalid export error message: #84887
• Fix Activity boundary names: #85185
• [codemod] Install ESLint v9 if version under for next-lint-to-eslint-cli: #85182
• [upgrade] Version gate adding --turbopack flag: #85180
• Tweaks to blocking route error message: #85191
• Remove layout-router sticky/fixed debug warning: #85193
• [cache components] persist cache bypass UI until it's disabled: #85190
• Only allow node runtime in proxy: #85139
• logger: skip logging full element: #85194

Misc Changes

• Docs: Explain Sass tilde import difference: #85041
• Turbopack: don't fail on export type in use server: #85054
• Turbopack: speedup module merging: #85043
• docs: remove experimental_ppr route segment config: #85188
• Rename "blocking route" error docs page: #85189
• docs: upgrade from 15 to 16: #85176

Credits

Huge thanks to @timneutkens, @gaojude, @ijjk, @ztanner, @sebmarkbage, @mischnic, @icyJoseph, @acdlite, @serhalp, @lukesandberg, @devjiwonchoi, and @huozhi for helping!