I predict that there will be more Sonic games next year on more platforms at the same time than pretty much every year since the series has been around, and I expect the games to be significantly better than all of the games released for the 15th anniversary... Which is not hard at all considering 2006 for Sonic games was the equivalent of eating a giant shit sundae mixed up with piss and broken glass with only a single cherry on top.
Anyways, doubt they will announce any Sonic games until after Sonic Colors is out. Remember how fast the hype died for Sonic Unleashed when Sonic and the Black Knight was revealed? Yeah, they are not going to mess up like that again.
Well... They might, but... Hey look, Phantasy Star Online 2.