The City of Heroes Official site has a state of the game address, looking both back at the past 3 years and to the future:

Three years. For some on the Development Team, the amount of change over that time has evolved the game to bear only a slight resemblance to its original form. In just the past 12 months we’ve published three major updates: Issues 7, 8, and now 9 (coming very soon). Seven and Eight added a ton to the game in terms of content for players to chew through, and now Issue 9: Breakthrough adds a completely new spin on things with the Invention System.

Read the whole thing HereSource: City of Heroes