-The process of installing and activating the game is now easier and more stable. SECUROM copy protection has been removed entirely, making the game DRM free!
-The "Troll Trouble" DLC package is included in the patch, bringing to an end any and all problems related to downloading this content.
-Problems related to downloading other free DLC have also been resolved. The game launcher now correctly detects and updates specific modules.
-Game efficiency has been improved. Game now runs 5-30% more efficiently and game loading has been accelerated. Efficiency increases will vary depending on system configuration and game version. Owners of boxed versions of The Witcher 2 are likely to notice the greatest improvements.
-Bugs causing the game to crash, especially while saving game progress or loading saved games, have been corrected.
-Movement key mapping has been expanded to include cursor (arrow) and number pad keys.
-Options have been added for inverting the X and Y axes of the mouse.
-NVidia 3D Vision Surround now works correctly with the game.
-The hardware configuration auto-detect function has been corrected, resulting in improved game efficiency.
-A bug preventing the completion of the "Blood Curse" quest has been corrected.
-After beating the GOG.com penitent monk in the mini-game, the relevant link now displays correctly.
-GOG.com credits have been corrected.