Didn't they literally say that they might consider raising the level cap later in the EA, during the last presentation they held? The option might be on the table now.
Well ... it depends ... Someone was asking about level 5, and Swen litteraly said: "The jury is still out on that wheter or not we're gonna put level 5 in Act 1 so if you keep asking hard enough maybe one day that is going to happen."
Not even single word about Early Acess ... I believe DragonSnooz was right, with that they plan to give us level caps in each act to control difficiulty. :-/
Source (2:09:55):
I still dont understand why cant we change Race for our hirelings. Lets us play Githyanki as racist as they trully are!