Despite the fact that it can't be played yet due to my inferior graphics card, I picked up TW2 via GOG before it went on sale to the masses and downloaded the soundtrack as soon as it came available early this morning. Folks, this soundtrack is a winner. TW1's music was pretty phenomenal and I listened to it for months before I bought a computer that would be able to handle the game. This time around it looks like I'm in the same boat, but honestly I can't complain too much. If you loved TW1's music then the sountrack for TW2 will bowl you over. A number of the key musical themes have returned from the first game as has its overall feel. This soundtrack, however, takes it up a notch with the addition of a few new instruments, more vocalizations (yes!), and a grander, more epic feel. Unlike many game soundtracks, this one stands well enough on its own and could easily be enjoyed by both gamers familiar with TW2 and the casual listener as well. Krzysztof Wierzynkiewicz and Adam Skorupa are truly in top form once again. This is one album that will be on serious rotation in the coming months.
Edited to Add: Here are a couple of tracks that particularly caught my attention.
The first "video" is rather bombastic in nature and acts as the game's theme song. The second video, "A Nearly Peaceful Place," is beautiful but much more subdued. In it you can clearly hear how The Witcher 1's main theme has been woven in with that from The Witcher 2. Those who pre-ordered TW2 from GOG and received the bonus tracks will notice that Bonus Track 3 was a slightly different version of this second video. Just for comparison sake, the third video is TW1's "Dusk of a Northern Kingdom" which prominently features the first game's main theme.
Image: Available as a wallpaper from GOG.com with purchase of The Witcher 2: Assassins of Kings