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Next.js 16.3 Brings App-like Speed and Smoothness Without Dropping Server Rendering

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Next.js 16.3 introduces several features aimed at making web apps feel as fast and fluid as single-page applications while retaining the advantages of server-side rendering. Key additions include Instant Navigations, Cache Components, Partial Prefetching, View Transitions, and Suspense streaming, demonstrated through four real-world demo apps. A new next/root-params API allows Server Components to access top-level route parameters from anywhere in the component tree, simplifying internationalization workflows. The Next.js team also held a community AMA covering performance, caching, App Router, React Server Components, and migration strategies. Complementing these updates, React's new browser() API documentation is now available in Canary, enabling components to suspend on the server and render normally in the browser.

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