Alright, I know I'm going to be hated on, but I just don't think they can do much, if anything. E3 this year is essentially guaranteed to Nintendo, they have too much to offer, too many first-party games and too many surprises coming up. If Microsoft tries to offer any more multimedia ideas, then they'll most likely say at the very end: "Oh, but there's a charge fee, $2.99 per use." Or something like that. Microsoft makes some ridiculous charges after all.
But guys, let's be honest the only thing Microsoft can get fans excited about, is Halo 4, they've said there will be no talk of their next console, and maybe they'll stir a few crowds with a Xbox 360 price drop, or Kinect drop, whichever they choose. Who knows though, I could be wrong.
Who?