Next.js 16.3 support on Vercel

Next.js 16.3 introduces significant improvements in prefetching, static asset management, and routing to enhance application performance and observability on Vercel. The update reduces prefetch requests by 45% on average, thanks to leaner prefetching strategies and immutable static assets that cut CDN requests by 17% and bytes transferred by 24%. Routing metadata optimizations ensure faster p99 route resolution, doubling the speed for large sites by combining metadata entries into JSONL-formatted shards, which improves cache hit rates. The release also enhances observability, allowing developers to monitor prefetch requests, cache revalidations, and Partial Prerendering (PPR) performance, which integrates Incremental Static Regeneration (ISR) and Vercel Functions to efficiently serve both static and dynamic content. These changes are designed to offer a more efficient and scalable experience for developers using Next.js 16.3 on the Vercel platform.

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