As we announced at Next.js Conf, Next.js 12 is our biggest release ever: Rust Compiler: ~3x faster Fast Refresh and ~5x faster builds Middleware (beta): Enabling full flexibility in Next.js with code over configuration React 18 Support: Native Next.js APIs are now supported, as well as Suspense <Image /> AVIF Support: Opt-in for 20% smaller images Bot-aware ISR Fallback: Optimized SEO for web craw