And speculating them making new specs is fine. The problem lies with people trying to take a leak and build up more than what was given. If we are going with the leak being real, then I assume it would say new specs for classes instead of new classes. I mean, it separated class skins from new classes. If new specs were the intent, it would have said so.
Granted, I could be wrong or plans have changed and the new classes are now attached to other classes as specs, but until we get something that definitively says otherwise I feel it's best to temper expectations.