- ~3x faster Fast Refresh and ~5x faster builds
- Enabling full flexibility in Next.js with code over configuration
- Native Next.js APIs are now supported, as well as Suspense
- Opt-in for 20% smaller images
- Bot-aware ISR Fallback: Optimized SEO for web crawlers
- Aligning with the standardized module system and many more.
For details: https://nextjs.org/blog/next-12