Mario and Sonic at the Winter Olympics
They will probably continue to do lots of 2D Sonic games (they can still do 2D pretty well)
I hope that they finally make a 3D Sonic that is worth getting. Sonic Adventure 3 perhaps? It would also be good if they just stuck to Sonic, Tails, and Knuckles, and got rid of all those crappy characters they have filled the last few games with.