I don't think this picture (in my opinion mind you) is a real screenshot from any source console or PC. I think it's a faked mock up. I've studied all the other images so far (about 12 in all) and http://www.gamereactor.se/media/59/elderscrolls5_235967b.jpg is the most surreal and strange of them all. The lake is too painterly like hand-painted water or some shader effect that isn't working. The plants on the left-hand bottom of the screen seem clipped from a stock source and photoshopped into the scene. Everything looks odd, off-color, and the waterfall looks hand drawn one tiny line at a time, and isn't blurred like running water. The trees even look photoshopped in. Here's a big one: look at the rock in the middle over the lake, there's no shadow under it on the water, it seems to be floating out there in mid air. It's totally faked. Look at the textures on the bottom-left dirt patch, the green blotches are not real, they are a joke. This can't be from any real image. The other images like the Dungeon with the zombies is absolutely mind boggling, but this is no where close to that. In my opinion, again.
I'm sorry, but unless Todd Howard tells me himself that this image is really from the game, snapped during live play, I won't believe it. And I don't want him to waste his time doing that, hahaha.
Okay, I'm sorry, forgive my rudeness, but this is honestly the biggest load of specious garbage I've ever seen thrown into one post. Your accusations are baseless and utterly absurd.
I don't want to go off on some tangent about why my observations are far more legitimate than yours, but that's a real screenshot. Not to diss Bethesda here (they need to make the game for 6 y/o console hardware) but if that were a pre-rendered screenshot I would have been a lot more impressed by it.