Well-Rounded Entertainment has this infoslip from Activision:
An Activision executive involved with the projects told us a little more about the intersection of the company’s Internet plans and Star Trek license. And while Star Trek: Q Continuum will be an online game, it won’t be something along the lines of EverQuest or Ultima Online. Activision is planning one of those, but has yet to sign a developer. The company has held informational chats with both Verant Software (makers of EverQuest and the forthcoming Sovereign) and Turbine Entertainment (currently wrapping up development on Asheron’s Call for Microsoft), but neither company has come on board. Massively multiplayer online games are expensive propositions, so Activision’s moving a little slower than normal on this one. At best, the game (currently envisioned as an ongoing adventure) is two or three years down the road.
Note the one company that has experience in MMORPGs not listed in the above list of potential developers ruled out.