We finally have the answer. On the official forums, Community Manager Tony "RadarX" Jones told DCUO fans that the update will be coming next week! He also took some time to explain that multiple exploits have been fixed, many mission bugs have been squashed, and the social UI has been overhauled.
For more information about the update, don your cape and cowl, then head over to Krystalle's interview with Chris Cao. If SOE keeps to its normal update schedule, we will see the new content on Tuesday (if not Thursday). To the Batcave!