Dominion and Klingon actually. Most of them. There haven't been too many changes from the version you have though, I don't recall any major changes (stats mostly). So whatever doesn't have a description in your game, needs one. Check the other ship descriptions for style.
I'll PM you the current XMLs.

Yeah, the shiplist has pretty much been static over the last three years or so. I'm not even sure what you mean about stat changes Iceman (Unless you're referring to your ongoing fuel/range convo with Mike), because I can't otherwise think of any. There certainly haven't been any since Daf left, anyways.

I mean stat fixes that I've made, quite some time ago, which I've spotted and posted about. It's natural that you don't remember. All low profile, but still needed fixing.

There's only one Klingon ship that already has a description, the Construction Ship.

We also need better descriptions for the Science Station, Starbase I and Starbase II, I think. They should probably be common to all empires - Outpost I and II have a small but illustrative description, and it is the same for everyone.