"Today we have a very special interview with Craig Zinkievich, the Executive Producer of Star Trek Online. He has been kind enough to let us have an interview with him about the brand new game, so here we go.
How long was the development time for a game of this size?
We've been developing the game for the past two years. It's built on the same engine as Champions Online. We've been at work on the engine for the past five years, so the two years we've had STO, we've been designing specifically for the game."
More of the interview at the link.