Next.js 15 Beta Adds PPR & Faster Turbopack Compiler

Next.js 15 Beta Released by Vercel

• Aims to push React-based web development further with smarter builds and server-side logic improvements.

New Compiler: Turbopack as Default

• Replaces Webpack in development mode.

• Offers 5x faster cold starts and ~700x faster updates on large projects.

• Built in Rust for performance and scalability.

Partial Prerendering (PPR)

• Allows pre-rendering of static parts of a page while deferring dynamic ones until request time.

• Combines SSG and SSR in a single page for optimal performance and SEO.

Improved Server Components Support

• React Server Components (RSC) now fully integrated and stable.

• Reduces bundle sizes by enabling server-only logic.

Enhanced App Router Stability

• Bug fixes and better dev experience with file-based routing and layouts.

• Refined loading UI and error boundaries.

Better TypeScript Integration

• Faster type checking and IntelliSense.

• Improved support for strict mode and automatic types in layouts and API routes.

Optimized Image Component

• Image optimization is faster with AVIF and WebP by default.

• Includes support for responsive images and aspect-ratio controls.

Built-In SEO Helpers

• Metadata API makes SEO configuration more declarative and dynamic.

• Supports dynamic metadata generation based on page props.

Enhanced Middleware & Edge Functions

• Easier creation and deployment of Edge APIs.

• Lower latency and tighter integration with Vercel’s Edge Network.

CLI & DevTools Upgrades

• Faster next dev and smarter error messages.

• New profiling tools available in Next DevTools extension.