From the source
From the source
Vercel supports Next.js 16.3 with performance and observability improvements.
Vercel announced full support for Next.js 16.3, including immutable static assets, faster routing, and improved observability.
Upgraded apps saw 45% fewer prefetch requests, 17% fewer CDN requests, and up to 60% global TTFB reductions.
Vercel also launched observability for Partial Prerendering (PPR).
From the source
Applications that have upgraded have seen: Fewer prefetch requests : Apps upgrading from 16.2 to 16.3 saw 45% fewer prefetch requests on average, with some seeing reductions over 70%. Lower static asset costs : With immutable static assets, upgraded apps saw 17% fewer CDN requests and 24% fewer bytes transferred for static content, and up to 60% global TTFB reductions for frequently deployed projects. Faster routing at scale : Routing metadata improvements in the critical serving path deliver ~2x faster p99 route resolution for large sites.
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