Next.js 15: The Features That Actually Matter for Business Websites

What Is New in Next.js 15

Next.js 15 is a significant release that stabilises many developer-experience improvements and introduces Partial Prerendering (PPR) as a production-ready feature.

Turbopack is Now Stable

After several release candidates, Turbopack is finally stable in development mode. Expect 76% faster fast refresh and up to 96% faster cold starts when compared with Webpack. For large projects, this is a game-changer.

Partial Prerendering (PPR)

PPR lets you pre-render the static shell of a page at build time while streaming dynamic content on each request. You get the SEO benefits of static rendering and the freshness of server rendering in one package.

Better Caching Defaults

Next.js 15 changes the default caching behaviour so that fetch calls and page renders are no longer cached by default. This aligns with what most developers actually expect and eliminates the stale-data surprises many encountered in v13/v14.

React 19 Support

Next.js 15 officially supports React 19 and its new features: useActionState, useFormStatus, and the native Document Metadata API, removing the need for next/head.

Practical Impact

For most business websites, the immediate wins are faster development with Turbopack, better first-paint from PPR on hybrid pages, and simpler data fetching with predictable caching defaults.