Next.js 15 RC ◆ React 19 + React Compiler support ◆ `fetch` and Route Handlers no longer cached by default ◆ Incrementally adopt Partial Prerendering ◆ New `create-next-app` design ◆ next/after (Experimental) nextjs.org/15-rc

@nextjs Any breaking changes in this release?

@workflowguy @nextjs There's a few linked at the bottom of the post – we also have published an upgrade guide and codemods!

@workflowguy @nextjs It not be a “breaking” change, but fetch not caching by default could certainly break *something* depending on how essential the cached queries are to the performance of your application. We will definitely do a sweep through our fetch calls before shipping an upgrade to 15.