That's a great news. Adobe finally announced that the Adobe AIR 2 beta is now publicly available on Adobe Labs!
Moreover the Flash Player 10.1 is available too. Flash Player 10.1 is the first runtime release of the Open Screen Project that enables uncompromised Web browsing of expressive applications, content and video across devices.
The features of AIR 2 are tons and they add real value to our desktop applications. Below you can get some useful resources and the list of the newest features that AIR 2 brings: