Mmorpg.com has an interview with Jack Emmert up that describes how Klingons will work in launch STO. Highlights include:
-The PvE game on the Klingon side will not be nearly as deep as that on the Federation side. Klingon missions will focus largely on PvP, and Klingon PvE will focus largely on randomized encounters in deep space.
- Initially all PvP will take place in instances. There will be ten instances at launch, and the max players per instance will be ten per faction.
-Klingon ships will be able to stealth out, while Federation ships will not. Klingon ships will be more maneuverable and better at close range fighting than Federation ships. Klingons will get the only ship capable of launching fighters.
All in all, I have to say that sounds pretty exciting to me. Two factions at launch with vastly different playstyles sounds like a good thing. Some commentators are up at arms because it turns out the Klingons won't have a PvE game of the same depth that the Federation has at launch. However, I don't see it as a problem at all. I imagine that the majority of players drawn to the Klingon faction will be there mainly to "kick Federation ass!" If you are there mainly for the PvP, not being forced to screw much with a PvE game is a good thing, not a bad thing.