NEXT.JS 15

Summary from the TLDR Web Dev newsletter

Next.js 15 is now stable and ready for production use, with a range of updates such as a new @next/codemod CLI for smoother upgrades, asynchronous request APIs, and caching semantics changes. It also supports React 19 and includes performance improvements with Turbopack Dev. Next.js 15 has better observability with a new Static Route Indicator and APIs like unstable_after and instrumentation.js.