Bethesda's game guru Todd Howard stated in a press-invited demo a few days ago, "I'd say it scales up in all the ways you'd expect. All of our art's really high-res. There are little things we do with all of our games on PC and the PC texture sizes are going to be as big as you can make them and you can pump the resolution up obviously."
"But most of that... What we want at the end of the day is that the game looks the same. The benefit you get is when you're playing a PC game you're playing this far away (demonstrates a short distance), when you're at home on your console you're usually sitting about six feet away so the game looks the same."
Regardless, all versions of Skyrim are heavily anticipated, and its release on November 11, 2011 (11/11/11) is sure to be a blockbuster.