I think they will reveal a little one that nobody actually noticed was wrong... but when it was pointed out to me it was very good that they 'fixed' it.
I'm pretty sure the game was dissected enough that even the most minuscule of problems are known and bitched about. 8-)
Sonic the Hedgehog 4 uses a CGI based sprite. This is not 2D, if they wanted to go with 2D then everything should be HD sprites but as it is, it is a massive let down, especially with the level of attention SNK are giving the new King of Fighters. Do the job either this way or that way, not a half job in between.
Actually, I agree with what Ken Balough was saying about how Sonic games always tried to look 3D. Genesis Sonic games never went for the flat cartoon style like Mario did.
I used to want sprites for this game, but then I realized the fact that Sonic always tried to be 3D, so I became okay with using models. Plus, the cel-shaded models actually remind me of the old pre-rendered title screens with their limited color shades.
Anyways, in my eyes, the graphics for Sonic 4 are perfect.