This new update is combining both the content styles of events and episodes: Players will have new rewards to work toward and new areas to explore, along with time-limited elements that encourage logging in and fighting back against the Crime Syndicate. The content will also bring in players of all levels, so even those who have yet to hit the level cap will be able to explore the length and breadth of the battle. Check out the full rundown for a preview of the content options available when the crisis starts up on… well, a different Earth, but a fairly finite number of Earths.
Source: Official Site