Given the stated support for remote streaming of media, you might not need XBMC.
Good point, guess I'm so used to XBMC for my media that, well, I'm not sure.. I'm just used to it, when talking media, XBMC seems the natural place to go.
And there's no word on the base platform, yet.
Oops, making assumtions there. I guess the previous collaboration with Canonical they've done led me there.