Next.js 15.1 | Next.js

Next.js 15.1 introduces React 19 stable support, improved error debugging, new experimental authorization APIs, and more.Next.js 15.1 brings core upgrades, new APIs, and improvements to the developer experience. Key updates include: React 19 (stable): Support for React 19 is officially available in both Pages Router & App Router. Improved Error Debugging: Enhanced DX and better source maps for the browser and the terminal. after (stable): New API to execute code after a response has finished streaming. forbidden / unauthorized (experimental): New APIs to enable more granular authentication error handling. Upgrade today, or get started with:.