It's fixed 16:10 with other AR's being anamorphic.
4:3 (1024x768)
16:10 (1680x1050)
16:9 (1920x1080)
Bah !
I haven't bothered to try and tweak it at all, so whether it can be changed or not we'll have to see....there's the usual plethora of UE3 .ini files scattered about though.
Better than normal UE3 vert- though? For 16:10 at least. Playing pillarboxed on 16:9 isn't great.

