I'm expecting a 3D blow-out from Sony at this years E3. I'm sure there will be a few more announcements regarding games releasing in Q3/Q4 but I expect their 'big' showing will be a 3D demonstration. We already know Sony are working on 3D games and a showing of various 'playable' titles at E3 would make sense. It will set up a major unique selling point for the PS3 (at least until MS get on board at some point) and will be far more effective at deflecting mainstream media attention away from MS and their Natal showing than any game announcement would.
I could be completely wrong but that would be my best guess for what we'll see later this year. Obviously, if they do show off some 3D games, how many of them we will actually be released this year and what technology (TV's) we will need to play those that are is another question.
