Update changeset

.changeset/popular-humans-attend.md

@@ -2,11 +2,21 @@
 "@remix-run/dev": minor
 ---
 
-Add unstable support for `routes.ts` to assist with the migration to React Router v7.
+Add support for `routes.ts` behind `future.v3_routeConfig` flag to assist with the migration to React Router v7.
 
-Config-based routing is the new default in React Router v7. Support for `routes.ts` and its related APIs in Remix are designed as a migration path to help minimize the number of changes required when moving your Remix project over to React Router v7. Since React Router v7 is not yet stable, these APIs are also considered unstable.
+Config-based routing is the new default in React Router v7, configured via the `routes.ts` file in the app directory. Support for `routes.ts` and its related APIs in Remix are designed as a migration path to help minimize the number of changes required when moving your Remix project over to React Router v7. While some new packages have been introduced within the `@remix-run` scope, these new packages only exist to keep the code in `routes.ts` as similar as possible to the equivalent code for React Router v7.
 
-The presence of an `app/routes.ts` file when using the Remix Vite plugin will disable Remix's built-in file system routing and opt your project into React Router v7's config-based routing.
+When the `v3_routeConfig` future flag is enabled, Remix's built-in file system routing will be disabled and your project will opted into React Router v7's config-based routing.
+
+To enable the flag, in your `vite.config.ts` file:
+
+```ts
+remix({
+  future: {
+    v3_routeConfig: true,
+  },
+})
+```
 
 A minimal `routes.ts` file to support Remix's built-in file system routing looks like this: