I'm just going to drop stuff out here and blh blah blah. On my mind has been the Human Character Model Changes. Good freaking god. Not all of my Humans came out nicely but a few are just great.
Here's a thread talking about the issue from the beta forums http://us.battle.net/wow/en/forum/topic/13681508189
Here is my Live Game Warlock who is a favorite:
and with the Character Model Improvements:
Thank Heavens, a person in the thread above was right. You can get your baby back to normal:
System/Advanced/Uncheck Show New Character Models