In terms of wireless display, there are options but there are multiple competing variations of "HDMI over wireless".
But they exist and have a sizeable community around hacking with them, primarily as TV boxes. The Ouya should bring this usage into the foreground, plus Dell's plans to make the first brand-named device in this market.
Actually, WinRT is a better OS for this space since it's designed front-to-back with keyboard/mouse and touchscreen support (incl app market requirements) but MS is being their own worst enemy with that platform.
http://9to5google.com/2013/05/10/android-notebooks-from-sams...
http://9to5google.com/2013/04/26/200-android-notebooks-on-th...
* Window managment.
* Compatibility with Linux applications? But that's very hard to do correctly.
* Extend the API, add support for more languages.
In the end we only need one device that's a little more flexible.