So I finally managed to snag a copy of the game.
I haven't played a lot so far, but all-in-all I rather like it.
The game plays very much like the genesis sonics, which some of you will love and others (like myself) will get annoyed with. It's very fast with a lot of jumps and quick turning and just like the old games, if you happen to miss that jump, you might have to back-track to pick up speed.
The controls are quite good, except for the fact that you tilt the wiimote backwards to go back and when you run backwards you literally run backwards, as in moon-walk it. It's kinda lame and you can tell it was put in as a stop-gap in case you miss a goal. Attacking enamies and making jumps is real easy though.... grinding and jumping have also been simpliefed to fix some of the issues in older 3d sonics.
Sonic has a story this time! Yeah a real story, not like those "defeat eggman, save the girl" cop-outs you usally get. This adds a bit of depth that is generally missing from sonic games. With that being said, they ....ahem.... "borrowed" a lot of characters. Your genie looks an awful lot like the girl in windwaker and the main villian looks like Gannondorf with an elvis hiarcut. The plot and setting sure seem to remind me of prince of persia. It still works, just don't expect any great plot twists or anything.
If I were to score it I'd give it a 4 out of 5. It's a sega game, and thus by default they screwed some stuff up, but it's the first "real" game on the wii since zelda and it has enough depth to keep us occupied until something better comes out. Oh it's fun too... not something I've been drooling over, waiting for it to come out, but it's a pleasant suprise.