the guys at doom3.planet-multiplayer.de have put hi-res versions of the recently released et:qw screenshots on their website:
http://doom3.planet-multiplayer.de/news.php?extend.2240
the reddish one with the goliath even has a resolution of 4000x2667
and btw: they didn’t put a disturbing logo on them, so the shots are pure
so big thanks to them for hosting the pics.