So. 2.0 has launched, and those who preordered before the cutoff date (Jan 17 IIRC) have their early access to RotHC.

In a totally unsurprising move, people gamed the system to already hit level 55 by way of stockpiling quest reward popups (I've heard numbers like 150 of them) for when the level cap went up. Log in, accept quest rewards, ding, 55.