- Add dozens of new utilities (border‑spacing, text‑start/end, grid‑flow dense, mix‑blend‑plus‑lighter, etc.) and expand TypeScript support for tailwind.config.js and plugins
- Introduce experimental matchVariant API, arbitrary variants, prefers‑contrast media queries, and several CLI enhancements (poll option, postcss import, custom variant validation)
- Fix numerous bugs around arbitrary values, @apply handling, and type detection; remove the default [hidden] style and rewrite the class extractor, which may affect existing projects