I work within the industry and I am going to spill some secrets.
Microsoft: will introduce game streaming (AAA games) and free xbox live. It will be missing features, but you can play multiplayer games for free.
Sony: They are working on a new AAA fps exclusive game that is comparable to Counter Strike, but for consoles. They want to make a successful fps because they know how powerful that genre is and take advantage of their large install base.
EA: They are announcing the new Mass Effect of course.
I'll let you guys know more as time goes by.