The Witcher 2 - X360 Version Previews @ 1UP

1UP has a preview for X360 version of the game.   An excerpt:

I walked into a console demo for The Witcher 2 with these biases firmly intact -- only to find myself contemplating abandoning my current PC Witcher 2 playthrough in order to tackle it fresh on the 360. From the graphics to the controls, every change in the Witcher 2 came as a pleasant surprise. The first change to the game comes seconds after pressing Start: A new pre-rendered cinematic fleshes out a scene that's only alluded to in the original game. Developer CD Projekt RED filled this new version with fresh cut-scenes -- including a new ending movie. Obviously, it'll take more than a few new movies to justify dumping the PC version, but these cut-scenes are just the beginning for the additions.

Official Xbox Magazine also has a preview.