Refine wording for Next.js + Compiler + SWC (#7779)

Co-authored-by: lauren <[email protected]>

Author: eps1lon

src/content/blog/2025/04/21/react-compiler-rc.md

@@ -96,9 +96,9 @@ The linter does not require the compiler to be installed, so there's no risk in
 ## swc support (experimental) {/*swc-support-experimental*/}
 React Compiler can be installed across [several build tools](/learn/react-compiler#installation) such as Babel, Vite, and Rsbuild.
 
-In addition to those tools, we have been collaborating with Kang Dongyoon ([@kdy1dev](https://x.com/kdy1dev)) from the [swc](https://swc.rs/) team on adding additional support for React Compiler as an swc plugin. As part of the RC release, you can now integrate the compiler into your [Next.js app with swc](https://nextjs.org/docs/app/api-reference/config/next-config-js/reactCompiler) instead of Babel.
+In addition to those tools, we have been collaborating with Kang Dongyoon ([@kdy1dev](https://x.com/kdy1dev)) from the [swc](https://swc.rs/) team on adding additional support for React Compiler as an swc plugin. While this work isn't done, Next.js build performance should now be considerably faster when the [React Compiler is enabled in your Next.js app](https://nextjs.org/docs/app/api-reference/config/next-config-js/reactCompiler).
 
-Next.js users can upgrade to [15.3.1](https://github.com/vercel/next.js/releases/tag/v15.3.1) or greater to try this out. If you have already enabled the compiler in your Next.js's config, swc support will be enabled automatically.
+We recommend using Next.js [15.3.1](https://github.com/vercel/next.js/releases/tag/v15.3.1) or greater to get the best build performance.
 
 Vite users can continue to use [vite-plugin-react](https://github.com/vitejs/vite-plugin-react) to enable the compiler, by adding it as a [Babel plugin](https://react.dev/learn/react-compiler#usage-with-vite). We are also working with the [oxc](https://oxc.rs/) team to [add support for the compiler](https://github.com/oxc-project/oxc/issues/10048). Once [rolldown](https://github.com/rolldown/rolldown) is officially released and supported in Vite and oxc support is added for React Compiler, we'll update the docs with information on how to migrate.