Square Enix:
- Final Fantasy XIV 2.0.
- Kingdom Hearts 3DS.
- Sleeping Dogs.
- Dragon Quest X.
- Maybe a trailer for FFX HD.
- Some verbal note that FF Versus XIII & Type-0 are being worked on. Footage in the next year.
Sega
- That new Sonic Racing game.
- Yakuza 5 trailer.
- North American PSO2 announcement.
- Shenmue HD collections to hit XBLA / PSN (Verbal note, no Shenmue 3.)
- Hopefully make use of that restructuring & show off some awesome new IP's or return of older ones like Toe Jam & Earl or something.
Sony
- Considering they've revealed most of their 1st party stuff I expect all emphasis to push the Vita.
- Expect to see a lot of 3rd party games announced for the Vita as well.
- Also expect to see more emphasis on cross platform play from Vita to PS3.
- New Killzone or something, maybe new Medal of Honor or another map pack for Battlefield 3 being exclusive to PS3 for the first week or something...
- Footage on the Last of Us.
Microsoft
- Kinect 2.0.
- more useless entertainment stuff no one needs or cares about.
- Halo 4.
- New Fable.
- Possible announcement of some third party exclusive titles.
Nintendo
- Wii U will obviously be the main push.
- First party gameplay footage from Mario, hopefully Metroid, hopefully Zelda.
- Maybe the return of the Mother series by some form of a miracle.
- Wii U version of Dragon Quest X.
- That new Rayman game.
- 3DS exclusive titles.
- Assurance 3rd party & online support will be there at launch for Wii U.