Tested Astro 6→7 on a 1,558-post blog: keeping remark/rehype past Sätteri with @astrojs/markdown-remark, the @astrojs/vercel v11 bump, and a middleware TS1543/esbuild import-attribute trap.
Astro 6.0 will be released on March 10, 2026. We've organized new features such as the Fonts API, CSP, Live Collections, and experimental Rust compiler, as well as breaking changes such as requiring Zod 4, Vite 7, and Node 22, and summarized migration points from Astro 5 projects.
