The game's 11th DLC is called Halls of Power Part 1, and it will send player heroes into a new saga looking back at the ancient past in the Fourth World. The DCUO dev team is creating five additional raids, alerts, and operations to go with the update, and players will have six new skill points to earn.
However, the crown jewel of Halls of Power Part 1 is the implementation of League Halls, which looks to be DCUO's answer to guild housing. League Halls will be added shortly before the DLC for free to all players.
[Source: SOE press release]