New, 12th DLC pack for DCUO called War of the Light Part II should be released later this year. On PC, PS3 and PS4.
You can look forward to new mysteries, six new adventures (Daily, Solo, one Duo, one 4-player and 4 and 8-player Operations). Plus new locations - Yamaron and Qward. And last but not least you will get six new skill points to earn.