Looks pretty good. I hope Bethesda do a better job of optimising this than they did Oblivion though, I'd actually like to be able to play it without it tearing my machine to peices unless I tweak the git to peices haha
Looking at those pics again though, it doesnt really look any better than Oblivion, I hope it looks nicer by release, as Oblivion is a couple of years old now, and it'd be a little dissapointing if they didnt improve the engine/graphics since then.