I'm not sure what you would consider deprecated.

The Adobe Flash Platform whitepaper lists new features they are working on ( http://www.adobe.com/devnet/flashplatform/whitepapers/roadma... ) and Flash Player 13 beta is available on their labs page ( http://labs.adobe.com/technologies/flashruntimes/flashplayer... ).

I have no idea how long Flash will stay relevant, but I think Adobe AIR has a shot at being a solid choice for building apps that need to work across multiple OSes.

But they still promote Air, and that's just packaged Flash.