v15.6.0-canary.1 is a pre-release release. Key changes include:

• Development: Don't import app-router / hot-reloader through next/link in application code: #83656;
• Turbopack: Only load capsize-font-metrics once: #83654.

v15.6.0-canary.0 is a pre-release release. Key changes include:

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

v15.5.3 is a patch release. Key changes include:

• fix: validation return types of pages API routes;
• fix: relative paths in dev in validator.ts.

v15.5.1-canary.39 is a pre-release release: [metadata] change the metadata routes params to promises: #83560

v15.5.1-canary.38 is a pre-release release. Key changes include:

• Ignore unhandledRejection events for promises that reject after a React render aborts: #83590;
• Update font data: #83631.

v15.5.1-canary.37 is a pre-release release: development: make 'ready in' 195ms faster: #83628

v15.5.1-canary.36 is a pre-release release. Key changes include:

• Exit next dev with a non-zero code when next.config.js is invalid: #83602;
• Development: Only load getStaticInfoIncludingLayouts when it's needed: #83555.

v15.5.1-canary.35 is a pre-release release. Key changes include:

• Update types and more test coverage for adapters: #82919;
• fix: devtools initial position should be from next config: #83571.

v15.5.1-canary.34 is a pre-release release. Key changes include:

• Turbopack: Remove 20ms overhead on bootup: #83554;
• fix: transpile-config should await import before return: #83566.

v15.5.1-canary.33 is a pre-release release. Key changes include:

• feat: use Node.js native TS resolver for next.config.ts: #83240;
• Disable React debug channel by default: #83552.

v15.5.1-canary.32 is a pre-release release: update rspack production test manifest: #83512

v15.5.1-canary.31 is a pre-release release: fix: route handlers should validate invalid exports: #83500

v15.5.1-canary.30 is a pre-release release. Key changes include:

• Use React's debug channel to transport debug info via WebSocket connection: #82748;
• Update Rspack production test manifest: #83475.

v15.5.1-canary.29 is a pre-release release. Key changes include:

• [metadata] not add suffix to sitemap.xml in group routes: #83486;
• [devtools] Use useEffectEvent instead of ignoring exhaustive deps: #83236.

v15.5.1-canary.28 is a pre-release release. Key changes include:

• [codemod] return origin src in viewport mod if not changed: #83435;
• feat(next/image): introduce preload prop and deprecated priority prop: #83351.

v15.5.1-canary.27 is a pre-release release. Key changes include:

• Revert "Revert "[Breaking] Bump minimum Node.js version to >=20.9.0" ( #83243)": #83411;
• Turbopack: refactor segment config parsing: #83297.

v15.5.1-canary.26 is a pre-release release. Key changes include:

• Upgrade React from 2805f0ed-20250903 to 3302d1f7-20250903: #83400;
• Fixed broken link in backend-for-frontend.mdx: #83310.

v15.5.1-canary.25 is a pre-release release. Key changes include:

• fix(ppr): fix prerender info matching for rewritten paths: #83359;
• fix: shrink bottom stack container height: #83377.

v15.5.1-canary.24 is a pre-release release. Key changes include:

• Use the automatic runtime for type checking: #83159;
• Streamline HMR message handling: #83336.

v15.5.1-canary.23 is a pre-release release. Key changes include:

• fix: remove redundant posix normalization: #83244;
• Remove satisfies keyword from type validation to preserve old TS compatibility: #83239.

v15.5.1-canary.22 is a pre-release release: turbopack: redefine background backend jobs: #83174

v15.5.1-canary.21 is a pre-release release: turbopack: improve overhead benchmarks: #83231

v15.5.1-canary.20 is a pre-release release. Key changes include:

• Turbopack: hide blocking spans in trace server: #83167;
• Update Rspack production test manifest: #83207.

v15.5.1-canary.19 is a pre-release release. Key changes include:

• [sourcemaps] Always check for vendor chunks regardless of Node.js version: #83114;
• Turbopack: Remove undocumented legacy syntax for built-in conditions (e.g. foreign, browser): #83068.

v15.5.1-canary.18 is a pre-release release. Key changes include:

• Turbopack: Add new webpack loader rule/condition syntax in config: #82857;
• Turbopack: Un-deprecate the TurbopackLoaderItem type: #83070.

v15.5.1-canary.17 is a pre-release release. Key changes include:

• Turbopack: Change eager import to lazy import for loader_tree: #83115;
• add unstable_prefetch config to typescript plugin: #83181.

v15.5.1-canary.16 is a pre-release release. Key changes include:

• [metadata] refine metadata image error for webpack: #83139;
• Upgrade React from 33a1095d-20250827 to 8d7b5e49-20250827: #83164.

v15.5.1-canary.15 is a pre-release release. Key changes include:

• [codemod] Only change files when new-link transform makes changes: #83112;
• Remove pages export as it is unused: #82990.

v15.5.1-canary.14 is a pre-release release. Key changes include:

• Upgrade React from 4123f6b7-20250826 to 33a1095d-20250827: #83119;
• fix global not found canont static shell with sync io: #83111.

v15.5.1-canary.13 is a pre-release release. Key changes include:

• fix(turbopack) Fix handling of intercept route segments: #82694;
• fix dynamic param extraction in edge-ssr-app: #83081.

v15.6.0-canary.1 is a pre-release release. Key changes include:

• Development: Don't import app-router / hot-reloader through next/link in application code: #83656;
• Turbopack: Only load capsize-font-metrics once: #83654.

v15.6.0-canary.0 is a pre-release release. Key changes include:

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

v15.5.3 is a patch release. Key changes include:

• fix: validation return types of pages API routes;
• fix: relative paths in dev in validator.ts.

v15.5.1-canary.39 is a pre-release release: [metadata] change the metadata routes params to promises: #83560

v15.5.1-canary.38 is a pre-release release. Key changes include:

• Ignore unhandledRejection events for promises that reject after a React render aborts: #83590;
• Update font data: #83631.

v15.5.1-canary.37 is a pre-release release: development: make 'ready in' 195ms faster: #83628

v15.5.1-canary.36 is a pre-release release. Key changes include:

• Exit next dev with a non-zero code when next.config.js is invalid: #83602;
• Development: Only load getStaticInfoIncludingLayouts when it's needed: #83555.

v15.5.1-canary.35 is a pre-release release. Key changes include:

• Update types and more test coverage for adapters: #82919;
• fix: devtools initial position should be from next config: #83571.

v15.5.1-canary.34 is a pre-release release. Key changes include:

• Turbopack: Remove 20ms overhead on bootup: #83554;
• fix: transpile-config should await import before return: #83566.

v15.5.1-canary.33 is a pre-release release. Key changes include:

• feat: use Node.js native TS resolver for next.config.ts: #83240;
• Disable React debug channel by default: #83552.

v15.5.1-canary.32 is a pre-release release: update rspack production test manifest: #83512

v15.5.1-canary.31 is a pre-release release: fix: route handlers should validate invalid exports: #83500

v15.5.1-canary.30 is a pre-release release. Key changes include:

• Use React's debug channel to transport debug info via WebSocket connection: #82748;
• Update Rspack production test manifest: #83475.

v15.5.1-canary.29 is a pre-release release. Key changes include:

• [metadata] not add suffix to sitemap.xml in group routes: #83486;
• [devtools] Use useEffectEvent instead of ignoring exhaustive deps: #83236.

v15.5.1-canary.28 is a pre-release release. Key changes include:

• [codemod] return origin src in viewport mod if not changed: #83435;
• feat(next/image): introduce preload prop and deprecated priority prop: #83351.

v15.5.1-canary.27 is a pre-release release. Key changes include:

• Revert "Revert "[Breaking] Bump minimum Node.js version to >=20.9.0" ( #83243)": #83411;
• Turbopack: refactor segment config parsing: #83297.

v15.5.1-canary.26 is a pre-release release. Key changes include:

• Upgrade React from 2805f0ed-20250903 to 3302d1f7-20250903: #83400;
• Fixed broken link in backend-for-frontend.mdx: #83310.

v15.5.1-canary.25 is a pre-release release. Key changes include:

• fix(ppr): fix prerender info matching for rewritten paths: #83359;
• fix: shrink bottom stack container height: #83377.

v15.5.1-canary.24 is a pre-release release. Key changes include:

• Use the automatic runtime for type checking: #83159;
• Streamline HMR message handling: #83336.

v15.5.1-canary.23 is a pre-release release. Key changes include:

• fix: remove redundant posix normalization: #83244;
• Remove satisfies keyword from type validation to preserve old TS compatibility: #83239.

v15.5.1-canary.22 is a pre-release release: turbopack: redefine background backend jobs: #83174

v15.5.1-canary.21 is a pre-release release: turbopack: improve overhead benchmarks: #83231

v15.5.1-canary.20 is a pre-release release. Key changes include:

• Turbopack: hide blocking spans in trace server: #83167;
• Update Rspack production test manifest: #83207.

v15.5.1-canary.19 is a pre-release release. Key changes include:

• [sourcemaps] Always check for vendor chunks regardless of Node.js version: #83114;
• Turbopack: Remove undocumented legacy syntax for built-in conditions (e.g. foreign, browser): #83068.

v15.5.1-canary.18 is a pre-release release. Key changes include:

• Turbopack: Add new webpack loader rule/condition syntax in config: #82857;
• Turbopack: Un-deprecate the TurbopackLoaderItem type: #83070.

v15.5.1-canary.17 is a pre-release release. Key changes include:

• Turbopack: Change eager import to lazy import for loader_tree: #83115;
• add unstable_prefetch config to typescript plugin: #83181.

v15.5.1-canary.16 is a pre-release release. Key changes include:

• [metadata] refine metadata image error for webpack: #83139;
• Upgrade React from 33a1095d-20250827 to 8d7b5e49-20250827: #83164.

v15.5.1-canary.15 is a pre-release release. Key changes include:

• [codemod] Only change files when new-link transform makes changes: #83112;
• Remove pages export as it is unused: #82990.

v15.5.1-canary.14 is a pre-release release. Key changes include:

• Upgrade React from 4123f6b7-20250826 to 33a1095d-20250827: #83119;
• fix global not found canont static shell with sync io: #83111.

v15.5.1-canary.13 is a pre-release release. Key changes include:

• fix(turbopack) Fix handling of intercept route segments: #82694;
• fix dynamic param extraction in edge-ssr-app: #83081.