docs: update README

README.md

@@ -18,6 +18,14 @@ I'll be posting updates and issues here.
 
 A few people have asked me to turn this into a starter. I think we could do that once the new features are out of beta.
 
+## Note on Performance
+
+> **Warning**
+> This app is using the canary releases for Next.js 13 and React 18. The new router and app dir is still in beta and not production-ready. 
+> NextAuth.js, which is used for authentication, is also not fully supported in Next.js 13 and RSC. 
+> **Expect some performance hits when testing the dashboard**.
+> If you see something broken, you can ping me [@shadcn](https://twitter.com/shadcn).
+
 ## Features
 
 - New `/app` dir,
@@ -38,9 +46,6 @@ A few people have asked me to turn this into a starter. I think we could do that
 
 ## Roadmap
 
-> **Warning**
-> This app is a work in progress. I'm building this in public. You can follow the progress on Twitter [@shadcn](https://twitter.com/shadcn).
-
 - [x] ~Add MDX support for basic pages~
 - [x] ~Build marketing pages~
 - [x] ~Subscriptions using Stripe~
@@ -56,7 +61,7 @@ A list of things not working right now:
 2. ~[Prisma: Error: ENOENT: no such file or directory, open '/var/task/.next/server/chunks/schema.prisma'](https://github.com/prisma/prisma/issues/16117)~
 3. ~[Next.js 13: Client side navigation does not update head](https://github.com/vercel/next.js/issues/42414)~
 
-## Why not trpc, Turborepo, pnpm or X?
+## Why not trpc, Turborepo or X?
 
 I might add this later. For now, I want to see how far we can get using Next.js only.