It's a preview event on the Test Server for Issue 7 of City of Heroes/Villains. Issue 7 (aka "Destiny Manifest") is the latest in the regular updates the most spandex obsessed of games. It's mainly centred on Villain content, but with enough elements to stop the Heroes complaining. For example, a new player-versus-environment zone, Grandville, is being added for Level 40+ characters, containing the Spider City. Timed Mayhem missions involving (er) smashing. A mass of new missions and patron powers, including new power sets for villains (Thug pets for masterminds, Electric armour and melee for Brutes and Dark Armour and Melee for Stalkers). And so on, included a general art upgrade for the slightly-dragging-behind City of Heroes.