It's quake 3 engine, and by the time it's out, it's likely that most of us will have geforce 3+, so expect monster frame rates and FSAA on those images.
I tried Jedi Knight out recently, and I just couldn't get into it. It starts slow and I guess without the jedi powers, it just doesn't compete with newer games, at least in the beginning. Let a lone the sub quake 2 graphics.