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Next.js 15 Beta Unveiled: Partial Prerendering, Turbopack Enhancements & More

  1. Next.js 15 Beta Released

    • Vercel introduces Next.js 15 Beta, packed with new features and performance upgrades.

    • Emphasizes enhanced developer experience and production-ready flexibility.

  2. Partial Prerendering (PPR)

    • Key feature: Partial Prerendering, combines SSR and static rendering.

    • Allows pages to be partly pre-rendered and completed on the client.

  3. Built-In React 19 Support

    • Fully compatible with React 19 Beta, including Streaming Server Components and Actions API.

    • Native use() hook integration improves async rendering.

  4. Turbopack Improvements

    • Turbopack, the Rust-based bundler, sees major performance gains.

    • Faster dev builds, improved cache performance, and more stable HMR.

  5. Updated Routing Features

    • Enhancements to App Router for better nested layouts and data fetching.

    • Simpler handling of dynamic routes with new conventions.

  6. Image Optimization Revamp

    • New next/image features: responsive loading strategies and cache optimizations.

    • Enhanced support for modern formats like AVIF and WebP.

  7. Improved Middleware API

    • More powerful edge middleware for real-time personalization.

    • Supports custom logic based on geolocation, headers, or cookies.

  8. Built-in SEO Enhancements

    • Native structured data support with new metadata configuration options.

    • Easier sitemap generation and canonical tag handling.

  9. Better Error Handling & Debugging

    • Clearer stack traces and improved logging with React 19.

    • Enhanced DevTools integration for tracing async operations.

  10. Deployment-Ready

  • Beta available now via npm install next@beta.

  • Final release expected in Q4 2025 after community feedback.

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