Next.js 15.4 Release Summary

Next.js 15.4 introduces key improvements in performance, stability, and compatibility with Turbopack.

Highlights

• Turbopack Builds: next build --turbopack now passes all 8,298 integration tests and is production-ready.
• Stability: Numerous under-the-hood enhancements to Next.js and Turbopack.

Next.js 16 Preview

Upcoming features include:

• Cache Components (beta) for unified caching behavior.
• Optimized client-side routing and improved prefetching.
• Enhanced DevTools with browser log forwarding and route inspection.
• Stable Node.js Middleware and new Deployment Adapters (alpha).
• Deprecations: Node.js 18, AMP, and updates to next/image APIs.

Source: Vercel Blog