The new power set is called Celestial and it's made for healing. New zones include the Gotham Wasteland and its daily solo quests as well as the Mausoleum alert that boasts a battle royale with Trigon. Cheetah and Donna Troy are your new Legends PvP avatars, and SOE has also included a bunch of additional feats and collections.
Legendary DCUO members get Sons of Trigon for free, while Premium and Free members can purchase it for $9.99 via the in-game market, the official website, or the PlayStation Network. Don't forget the launch trailer after the break!
[Source: SOE press release]