CD Projekt Red's the Witcher 2 will be receiving a rather "involved" update to its already critically acclaimed gameplay with whole new modes being added.
First will be the "Dark Mode", a brand new difficulty that remains right below Insane Mode. There will also be an "Arena Mode" in which players will be able to put their fighting skills to the test against an endless wave of enemies. Last long enough and you will be greatly rewarded with XP and special items.
Expect to see this free patch on the 29th of September for the PC, but for those of you waiting for the Xbox 360 version, this update will already be included.