NcSoft announced today that their long-running, superhero MMO franchise City of Heroes, has a major expansion in development for the PC and Mac. Titled, "Going Rogue", the expansion aims to blur the line between good and evil:

"City of Heroes Going Rogue will introduce a new alignment system that helps players explore the shades of gray that lie between good and evil. For the first time, hero characters can become villains and vice versa, enabling hero archetypes to cross over to the Rogue Isles™ and villain archetypes to experience Paragon City™. Clearly marked missions, in addition to behaviors and decisions made by the player, will move a hero's or villain's moral compass, which could eventually change the hero's or villain's alignment."

Here's the accompanying announcement trailer to illustrate the idea in a more bombastic fashion. No details on release dates as of yet. For more check the out the official site here.

City of Heroes Going Rogue Announcement Trailer