heres some lego sets that are rumored for 2012 (not confermed).
Star Wars 9674 Naboo Starfighter and Naboo Pilot 9675 Sebulba’s Podracer and Sebulba 9676 TIE Interceptor and TIE Pilot 9488 ARC Troopers vs. Commando Droids 9489 Endor Rebel (x2) vs. Scout Trooper & Stormtrooper 9491 Geonosian Cannon 9490 Droid Escape 9492 TIE Fighter 9493 X-Wing 3866 Battle of Hoth (LEGO Games)
Creator Sets 4636 Police Set 4637 Safari Set 7346 Summer House
City 4205 Off Road Command Centre 4208 Fire Truck 4209 Fire Plane 4427 Fire ATV 4430 Fire Transporter 4431 Ambulance 4432 Garbage Truck 4433 Dirt Bike Transporter 4434 Tipper Truck 4435 Car and Caravan 4436 Police Patrol Car 4437 Police Pursuit 4439 Police Heavy Lift Helicopter 4440 Forest Police Station 4441 Police Dog Van 4442 Crooks Hideout
these are all the ones i know of at the moment when i find out about more i will post them here