I just pre-purchased the game on Steam. Gonna have to install Windows 7 on my Mac and dual boot to play it...ugh. But at least I get to play it. I'm still bitter about Sonic '06 (I know it's almost universally accepted to be terrible game, and I hated it as soon as I saw the realistic direction of the game, but I still wanted to play it for the experience, you know?).
Speaking of which, I'm going to attempt to use my Wii Remote and Nunchuk to play the game. I can't use keyboard and mouse for games if my life depended on it. Does anyone know if this will work? I've done it before with a few other games, but I couldn't get it to work with Portal when I tried. I don't know if it's a Steam thing or what, because the other games I tried that worked weren't on Steam.
I'm much more excited about the 3DS version, though I really wish it had 3D gameplay too. I'm not a huge fan of 2D Sonic gameplay (*gasp!*).