Remix 3 Beta: Rewrite Full-Stack Framework with Web Standards, Separated from React

In 2026, the Remix team released Remix 3 Beta (v3.0.0-beta.5). It abandoned React at the underlying layer and built a UI-agnostic full-stack framework with Fetch API, Preact Fork and Web standards. Existing Remix 2 applications should be migrated to React Router v7. Positioned as a brand new starting point, Remix 3 introduces new primitives such as Frames and Unbundling, triggering debates on the front-end architecture roadmap.