I assume everybody has kind of noticed the downward spiral that the sonic series has been going down ever since Sonic adventure 2/sonic adventure battle, with the loads of new characters that are all ridiculously stupid. Apparently Sega has realized that the games where much more well made back when the sonic adventures where running, and they've decided to make sonic adventure 3, though they've opted to rename it "sonic unleashed". The producer said something like "We haven't had much luck with the newer sonic games... and wanted to bring it back to the roots and ditch the genies".
And i think the best part about the new game is, its just focusing on the original sonic crew, not stupid alligators, little bees and such, the characters consist of Tails, Sonic, Knuckles, Shadow, and perhaps even some BIG the cat haha or E-1349 or whatever the old robots name was, and of course Amy.
In short sonic has been sucking sooooo much since they had to remake sonic adventure into sonic DX (partially opinion -_-) and this looks really promising.