All Witcher 2 Downloadable Content will be free
"Let [us] announce that all our DLCs will be FREE," they write. "All of them. If anything will be for purchase, those will be expansion packs. First DLC (side-quest called "Troll Trouble") [launches] together with the game release."
Witcher 2 is said to clock over at least a minimum of 40 hours of gameplay. When i say minimum, i mean the main storyline will take that long to finish, so if you add all the extra side quests and other things you can do in the Witcher world, where looking at maybe 70+ hours? this is indeed a meaty RPG and I'm sure all RPG fans are anxiously waiting for the game's release. We need more hardcore PC RPG's just like the old days and I hope more will come in the future.
There's a possibility in the future that the game will be released also on PS3 and Xbox 360 but for now it's considered a PC exclusive.
Just in case you don't know the Witcher 2, here's a few videos to get yourself familiar with the game.
Also Check out the System Requirements for Witcher 2 to see if your PC can handle it, just to be on the safe side.