Hopefully it won't be as crappy as Sonic 06...
I'm looking forward to it as well, if solely for the reintrodution of Classic Sonic. If I wanted Classic gameplay, I could just pop in Sonic 2. I won't be able to play it anyway, I don't have a PS3 or 360. I am more excited for Professor Layton and the Mask of Miracle, the 4th game in the epic series!
What about Sonic Colours? That was a commercial success, and the gameplay wasn't half bad. And Sonic Rush helped necessitate the need to return the Blur to his 2D roots. And what do you mean "multiplayer one"? If you're talking about Sonic Heroes, one person controlled three characters, not extra players.