There are four new maps that have been added.
Shipwreck Cove, Dreadful Thicket
Nomadic Encampment, Dwarven Mine
There are also new LE items for sale.
Last but not least there is a Memorial Tournament PvP Event that the screen says ended yesterday but appears to be working. The nice thing is it has a built in tracker for number of wins and is indeed counting.
The prize is an Infernal Hydra w/ unknown stats or enhancements.
Edit- CJ54 posted that the event was dropped in error and so has been removed.