I posted earlier about the game not being in widescreen, I now can confirm that it is a widescreen game and looks great! The frame rate suffers a bit in the big outdoor areas but it is still a good port IMO.
Gamespot's On The Spot show from last week had one of the developers playing the game, and he definately said the game would only be 4:3 because the xbox was not powerful enough to run it 16:9, strange he would say that when it is a widescreen game.