anyone ever read if anything like this is coming in a higher res desktop monitor (soon)?
I don't think that matters (plus you can make custom profiles). The limit should be the weakest link in your system. Assuming you have a current high end computer (and the game you are trying it on isn't too demanding) I would guess the weakest link would be the DVI connector which is limited to 165Hz.
Yeah, I think I saw somewhere that you'd have to use HDMI to get 4096x2160 @ 60hz. Hmmmm...