Next.js 15 Has a Free React Framework with Turbopack and Server Actions

Next.js 15 ships with Turbopack dev server (700x faster than webpack), stable Server Actions, and Partial Prerendering. What's New in Next.js 15 Turbopack (stable for dev): next dev --turbopack Local dev server starts in <500ms for large projects. HMR in <50ms. This was the #1 pain point for years. Server Actions (stable): // app/actions.ts ' use server ' ; export async function createUser ( formData : FormData ) { const name = formData . get ( ' name ' ); await db . user . create ({ data : { name } }); revalidatePath ( ' /users ' ); } // app/users/new/page.tsx import { createUser } from ' @/app/actions ' ; export default function NewUser () { return ( < form action = { createUser } > < input name = "name" /> < button type = "submit" > Create </ button > </ form > ); } No API route. No fetch. Just a function that runs on the server. Partial Prerendering (experimental): Static shell renders instantly. Dynamic parts stream in. Best of static and dynamic in one page. What You Get for Free