In the Azure Nebula Rescue event, players attempt to rescue as many Romulan ships as possible from the Tholians within a set time limit. To do so, they must disable four tractor beams holding a captured ship in place. Rescuing larger ships will net more points, but they are protected by stronger enemies. Any Vice Admiral or Lieutenant General can participate in this event and rewards are based on how many ships are rescued and how valuable the ships are.
Successful rescuers will receive a modest Fleet Mark reward, as well as Romulan Marks which will be used in the new Reputation system.
You can check out the blog for yourself here.