This is still happening to me as of this morning. It seems quite random. There have been times when I load the game up and the PK is there for create-a-class. But other times it is no longer in what were my PK classes and it is locked out with the "need to have Revolution DLC" message. Come on Treyarch, almost a week after release and they haven't fixed this yet?
"You are Japan, and I am GODZILLA!!!!!!!!" Things To Do in Denver When You're Dead - Critical Bill