Well my friend just sent me a link to this, and it's the 100% real, full roster that someone posted from Japan (since the game came out yesterday)

All the pics look so real, and Lucario, Marth, Jigglypuff, and Ness were already revealed to return in other videos.

http://img134.imageshack.us/img134/7983/finalrosterrevealedmp4.jpg