I know the Game Informer scans could show up any minute now, but bare with me.
When Oblivion was in development, I used to frequent this site to see what the game was going to look like. In the end there were a lot of similarities.
Just a educated guess, but I would assume that Bethesda is using the SpeedTree tool for Skyrim. If so, this might just give us an idea of what wandering through Skyrim might be like. --- "That which can be asserted without evidence, can be dismissed without evidence." Christopher Hitchens