360 version coming on the 2nd quarter. Enhanced Edition:
http://addicted-gamers.com/2012/01/14/the-witcher-2-gets-enhanced-edition/
Developer CD Projekt RED has made numerous tweaks and fixes to the original game, further optimized the controls for the console (even though gamepad controls for the PC version were already in good shape), and is said to have added over four hours worth of new quests. The story-arc for these additional quests revolves around the kidnapping of royal heirs which will have the player experience new locations, characters, and dialogue.
http://addicted-gamers.com/2012/01/14/the-witcher-2-gets-enhanced-edition/