The Mount Fang Expansion that will increase the level cap to 66 is slated for release later in November. The team is working on putting the finishing touches on all new monsters, armor, weapons, quests, boss fights and more! We're aiming to have it in your hands before the US Thanksgiving Holiday.
One thing to keep in mind is that Mount Fang will increase the level cap. When that happens the current level cap vanity reward (the Shield of Hallows) will go away and a new level cap vanity will be available. There is a set bonus for collecting all of the level cap vanities. If you're interested in collecting a Shield of the Hallows, now is the time!