The Wii Wii will be announced.
On a real note, I have been calling Zelda Wii Cmas 09 for like 2 years now. That alone would be HUGE. Add to that I expect to see whatever Retro is doing, and maybe throw in something casual.
WiiFit 2 Will not come, heck they cant even stock WiiFit... I would really like a DK adventure, but I dont think that will happen.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut