• #17899 0389640 Thanks @ematipico! - Fixes an error that prevented projects using astro:assets from starting or building

• #17767 ce7c91f Thanks @astro-factory! - Adds --ignore-lock flag to astro preview, allowing multiple preview servers to run simultaneously on different ports. This is useful for E2E testing workflows (e.g., Playwright) that need to run several preview servers at once.

• #17818 c0b6581 Thanks @florian-lefebvre! - Adds a logger parameter to image services hooks

  Custom image services now receive Astro's runtime logger as an extra argument. Messages logged with it are routed through the destination configured in logger and respect your log level, instead of being written straight to the console:

  import type { LocalImageService } from 'astro';
  
  const service: LocalImageService = {
    // ...
    async transform(inputBuffer, transform, imageConfig, logger) {
      logger.warn(`Could not optimize "${transform.src}". Passing it through unchanged.`);
      return { data: inputBuffer, format: 'png' };
    },
  };

  Astro's built-in Sharp service now uses this logger for the warnings it emits when it encounters an unexpected or unsupported source format.

• #17818 c0b6581 Thanks @florian-lefebvre! - Adds logger to the context object passed to cache providers

  Custom cache providers now receive Astro's runtime logger on the context passed to onRequest(). Messages logged with it are routed through the destination configured in logger and respect your log level, instead of being written straight to the console:

  import type { CacheProvider } from 'astro';
  
  const provider: CacheProvider = {
    name: 'my-cache',
    async onRequest({ request, url, logger }, next) {
      logger.warn(`Skipping cache for ${url.pathname} because the response sets a cookie.`);
      return next();
    },
    // ...
  };

  Astro's built-in memoryCache() provider now uses this logger for the warnings it emits when it skips caching a response that sets cookies, and when a background revalidation fails.

• #17818 c0b6581 Thanks @florian-lefebvre! - Updates Astro's remaining internal warnings and errors to be written through the configured logger instead of directly to the console, when possible

• #17886 e747cba Thanks @matthewp! - Fixes the memory cache provider to skip responses with Vary: Cookie or Vary: *

• #17885 916b738 Thanks @Princesseuh! - Improves build performance for sites with a large number of pages coming from a large amount of different modules.

• #17795 15e2deb Thanks @matthewp! - Adds concurrent rendering support for experimental.incrementalBuild, including when using @astrojs/cloudflare

  Incremental builds no longer disable caching when build.concurrency is greater than 1. Projects that set build.concurrency: 1 to keep the cache enabled can remove that workaround. Cloudflare builds also reduce serialization overhead for large prerendered pages.

• #17879 21c34a6 Thanks @matthewp! - Fixes missing styles, links, and scripts from content collection entries rendered inside server islands

• #17861 3193988 Thanks @ethanstoner! - Fixes i18n fallback routes being generated with a corrupted path when the locale code also appears at the start of a later path segment. A page such as src/pages/en/enterprise.astro with fallback: { es: 'en' } produced the route /es/esterprise instead of /es/enterprise, so the fallback never matched the intended URL. Only the leading locale segment is rewritten now.

• #17818 c0b6581 Thanks @florian-lefebvre! - Updates the development image service to forward every argument it receives to Astro's Sharp service, including the new logger parameter

• #17795 15e2deb Thanks @matthewp! - Adds concurrent rendering support for experimental.incrementalBuild, including when using @astrojs/cloudflare

  Incremental builds no longer disable caching when build.concurrency is greater than 1. Projects that set build.concurrency: 1 to keep the cache enabled can remove that workaround. Cloudflare builds also reduce serialization overhead for large prerendered pages.

• #17887 35aa62e Thanks @matthewp! - Adds a Cloudflare finalize() response handler for custom request handlers

  Call finalize() to apply cookies and Cloudflare CDN cache defaults to the response from an astro/fetch pipeline:

  import { astro, FetchState } from 'astro/fetch';
  import { cf, finalize } from '@astrojs/cloudflare/fetch';
  
  export default {
    async fetch(request: Request, env: Env, context: ExecutionContext) {
      const state = new FetchState(request);
      const asset = await cf(state, env, context);
      if (asset) return asset;
  
      return finalize(state, await astro(state));
    },
  };

  The @astrojs/cloudflare/hono middleware applies these response headers automatically. Cloudflare custom entrypoints also fall back to static assets when no Astro route matches and use the default server entrypoint when prerendering through workerd.

• #17895 41b88ac Thanks @astro-factory! - Fixes cold astro dev crashes by adding astro/app/manifest and @astrojs/cloudflare/cache/provider to the optimizeDeps.include list

• Updated dependencies []:

  • @astrojs/underscore-redirects@1.0.4

• Bump prosemirror-view to ^1.42.3, which fixes an XSS vulnerability where pasting crafted HTML could run arbitrary JavaScript (GHSA-c8x8-7fp4-3x9w).

September 3, 2026

• Fixed the month heading row disappearing in resourceTimeline views with a custom duration (660)
• Fixed incorrect slot width calculation in resourceTimeline views with a day-long slotDuration (661)

Special thanks to the following sponsors of EventСalendar:

@ekwi-tech @syncsynchalt @aurawindsurfing

• reject protocol mismatch for existing sessions (86db1fc)
• restore compatibility with Node.js 10 (ae7fb46)
• run the polling write callback when the client aborts a compressed response (#5540) (915a3ed)

• optimize polling request body buffering (dcbd961)
• stream compressed polling responses (91dd763)

• ws@~8.21.0 (no change)

• Fix freezes in framework-based node views on iOS and Android

• Reduce Turbopack cache size with per-family compression: #97714
• [test] Skip hooks of suites skipped by a lazy @force-gate: #98169
• docs: local development: Rewrite docker section, add Windows Dev Drive and WSL2 instructions: #98164
• Bump swc to v77: #97407
• Upgrade React from ff7445e6-20260831 to 21c89c9f-20260901: #98147
• turbo-tasks-backend: parent_count-driven garbage collection: #97282
• Remove the worker thread for turbopack builds: #96862
• turbo-tasks-malloc: address review feedback on #97761: #98153

Huge thanks to @lukesandberg, @eps1lon, @bgw, and @mischnic for helping!

Release 2026-09-02 22:20

• solid-query: built-in single-flight consumer via FLIGHT_DATA_SOURCE (#11326) (72f818550) by @ryansolid

• solid-query: scope useMutation's cache subscription to the flight (#11325) (209f9f515) by @ryansolid

• @tanstack/solid-query@6.0.0-rc.2
• @tanstack/solid-query-devtools@6.0.0-rc.2
• @tanstack/solid-query-persist-client@6.0.0-rc.2