I've seen this cover art before, a few months ago actually........ it's not legit. If you go on google images or deviant art you can see plenty of different varieties of this cover that random fans made. Even if this cover was real I don't think they would put Sonic on the front, they would probably make him a hidden unlockable character and the hidden characters never appear on the front because that would ruin the whole anticipation of it. So, it's definately a fake........