Sonic Generations was being designed around the time Sonic Unleashed was almost finished. Initially they were designing the next major non-download release as if Unleashed was the game to bring Sonic back into the highest ranked games around, everything was set up before they would have ever been able to see how well Sonic Colors would be received, and they expected even higher reviews for Sonic the Hedgehog 4. So basically, they dug themselves into a hole once again, but this time I do not think it seems so bad really.
I am not really pumped for the game, as I assumed that more concepts from Colors would be used, like no QTEs and badniks for boost instead of rings, but apparently I am wrong on both accounts and that worries me... Though at this point, I have learned to accept the quality of Sonic Team's releases, and just as long as it is not as frustrating as something like Unleashed or Journey of Dreams, I am not too worried. Honestly, seeing classic levels in 3D and Adventure 1 and 2 levels in 2D just really excites me enough for me not to complain too much anytime soon.
Moving on, I was thinking that perhaps the reason this is not seeing a Wii release is because Nintendo MAY be planning to release their next console at the end of this year. If you think about it, it kind of makes sense! Good Sonic and Zelda games released on the same day for the same new console... If that is not in some kind of holy prophecy than it should be!