For Nintendo, I'm actually having big expectations. Wouldn't be surprised to see this:
- new Zelda Wii with Motion Plus support (just because everyone says so)
- more Motion Plus stuff
- obviously some health games supporting the vitality sensor, but maybe also a horror game
- 3DS obviously
- but since 3DS is announced already beforehand, I'm also expecting something in the line of Wii HD with controllers that are Wii Motion Plus from the ground up, or a new, separate camera peripheral.
- new direction in online networking announced
- lots of DS and 3DS games
- not many first party games, but perhaps more than expected by Nintendo fans
- Metroid Other M?