The new Mortal Kombat is shaping up to have a ton of characters, as you will be getting 3 different versions of each character, and each plays like a different character.
In a recent interview with gamereactor, Ed Boon said this:
"The main thing that we want to do is introduce new things, new features, new gameplay elements to the mix," says Boon. "This Mortal Kombat we're introducing more new characters than we have before. And introducing more features like the character variations - every character in the game has three versions that have different moves and different kind of strategies involved with them. So the process of selecting a character and going up against another character is completely different in this game, because of the three versions of every character."