According to Liberty, the bulk of Update 31 focuses on preparing DCUO for its impending PS4 launch. Changes include graphics upgrades like higher resolution textures and area redesigns, along with a "remastering" of the core leveling experience. Leveling from 1-30 has seen special attention; Liberty noted that new players should see a smoother progression of content with less chance of being stuck without a mission.
Update 31 is tentatively scheduled for a November launch on PC and PS3. The game's PS4 release is still on track to match up with the console's release window.