Gmail app for Android gets more than facelift, decoupling the Gmail updates from Android versions.
“you can get new Gmail stuff faster without having to wait for system updates. As you scroll through a conversation, your most important message actions will now stick to the top of the screen, one click away, no matter how long the email is” – blog
The Gmail app (requires Froyo, i.e. 2.2) has a basic support for Priority Inbox.
