I seem to remember something about a Githzheri(sp) possibly being in, but I dunno (it would be fun seeing the dynamics with the other Gith's in the game).

I hope they expand on the sub classes though. I would really like to see the undeath Warlock and the Oath Breaker Paladins. The most probable would be the Oath Breaker considering those are pretty much the first "Paladins" we see in the game.