v15.6.0-canary.23 is a pre-release release. Key changes include:

• Development: Only load webpack when used: #84123;
• Turbopack: Skip loading webpack plugin: #84125.

v15.6.0-canary.22 is a pre-release release. Key changes include:

• Turbopack: Fix babel-loader (allowing built-in or manual configuration): #82676;
• [Cache Components] allow using headers() in runtime prefetches: #83838.

v15.6.0-canary.21 is a pre-release release. Key changes include:

• Allow passing port to next internal trace: #83907;
• Turbopack: error when importing Typescript in node_modules: #83990.

v15.6.0-canary.20 is a pre-release release. Key changes include:

• fix: worker logs should still support color: #84024;
• Update font data: #84005.

v15.6.0-canary.19 is a pre-release release. Key changes include:

• Update Rspack production test manifest: #83979;
• Update Rspack development test manifest: #83980.

v15.6.0-canary.18 is a pre-release release. Key changes include:

• Upgrade React from 84af9085-20250917 to d415fd3e-20250919: #84003;
• Turbopack: use depth as priority for merged module info: #83909.

v15.6.0-canary.17 is a pre-release release. Key changes include:

• feat: Isolate dev build from prod: #83961;
• Remove JS size reporting from next build: #83815.

v15.6.0-canary.16 is a pre-release release: add descope to auth libraries list: #83968

v15.6.0-canary.15 is a pre-release release: remove force writing **/*.mts to tsconfig: #83967

v15.6.0-canary.14 is a pre-release release. Key changes include:

• [Cache Components] Allow sync IO inside console methods : #83843;
• Upgrade React from 128abcfa-20250917 to 84af9085-20250917: #83959.

v15.6.0-canary.13 is a pre-release release. Key changes include:

• Remove inline CSS sourcemaps from next-devtools: #83917;
• Development: Move all TypeScript related work in watcher together: #83912.

v15.6.0-canary.12 is a pre-release release. Key changes include:

• OTel: use srcPage for templates when next.route is unavailable: #83911;
• Turbopack: RuleCondition support resourceQuery contains: #83468.

v15.6.0-canary.11 is a pre-release release. Key changes include:

• Development: Clarify TypescriptStatus in watcher: #83857;
• Upgrade sharp dependency to version ^0.34.4: #83892.

v15.6.0-canary.10 is a pre-release release. Key changes include:

• Upgrade React from 8a8e9a7e-20250912 to 5e0c951b-20250916: #83850;
• Bump typescript 5.9.2: #83833.

v15.6.0-canary.9 is a pre-release release. Key changes include:

• fix(Rspack): resolve HMR unresponsiveness or unexpected full reload & update dev snapshot: #83480;
• Allow next.config.mts for Node.js native TS resolver: #83556.

v15.6.0-canary.8 is a pre-release release. Key changes include:

• [Breaking] Flat config as default in @next/eslint-plugin-next: #83763;
• fix: Rspack splitChunks.chunks regex: #83670.

v15.6.0-canary.7 is a pre-release release: turbopack: remove matchers.reload() call on each request: #83720

v15.6.0-canary.6 is a pre-release release. Key changes include:

• [OTel] fix: Root span name should not include high cardinality URL: #75416;
• Emit build error when 'use cache' directive is misspelled: #83756.

v15.6.0-canary.5 is a pre-release release. Key changes include:

• Upgrade React from f3a80361-20250911 to 93d7aa69-20250912: #83729;
• Upgrade React from 93d7aa69-20250912 to 8a8e9a7e-20250912: #83742.

v15.6.0-canary.4 is a pre-release release. Key changes include:

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

v15.6.0-canary.3 is a pre-release release. Key changes include:

• fix: dev should produce the correct default fallback regex to match builds/Turbopack: #83701;
• [devtool] fix overlay styles are missing: #83721.

v15.6.0-canary.2 is a pre-release release. Key changes include:

• Remove clientParamParsing requirement from RDC for Navigations: #83661;
• Upgrade React from 6b70072c-20250909 to 886b3d36-20250910: #83650.

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.