The Witcher was a breakout hit last year for CD Projekt, selling over 600,000 copies, making it a huge exclusive on the PC.  That said, there were some big problems with the game that hindered it from being the a great RPG.  Some, like myself, looked past the issues, to enjoy the game as a whole.  Others really had issues with the bugs and potion crafting system.

CD Projekt listened to the complaints, and decided to release The Witcher Enhanced Edition, which adds completely re-recorded dialog, based on the European script, a much more refined potion crafting system, spruced up graphics and animations, and uncensored playing cards.  Well, were not sure about that last one, but those that bought the US version can dream.  Look for the The witcher Enhanced Edition in September.  If you missed it the first time around, this is your chance to get the definitive version of the game.