User blog comment:DerpyPanda24/My Crappy Roster Prediction/@comment-24563487-20140715135458/@comment-4798275-20140715140550

There has been no official word of the size of the roster. They are very obviously finished with adding characters to the game, as they are in debugging mode for the 3DS version. It all comes down to who and what they'll reveal before the 3DS release. Unless they do that sneaky little thing like they did with Brawl, where they released characters after the launch date. I wouldn't mind, I'd like the surprise of finding them myself. I'm estimating maybe around 45 characters? Somewhere in that general area. Mewtwo is on the fence, fan base wants it, and Sakurai loves to keep us waiting for just the right moment. The most likely returning veterans to be revealed now are Ganondorf, Falco, Jigglypuff, Meta Knight, Wario, Ness, Mr.G&W, Ice Climbers, and hopefully Wolf. Jigglypuff is from the most original Smash Bros., she isn't going anywhere.