Dev Tools · 1h ago
React 19 Ships Actions, useOptimistic, and use() Hook
React 19 stabilizes the Actions model for forms and mutations, adds useOptimistic for instant UI feedback, and introduces the use() hook for reading promises and context. The upgrade improves hydration error messages and simplifies ref-as-prop usage. The compiler (React Forget) remains separate and optional.
Meridian48 take
The release focuses on practical improvements for real-world apps, but the compiler hype may distract from the fact that most teams will only adopt a subset of features immediately.
react-19frontend-development