The Witcher 2 - Preview @ God is a Geek

A site called God is a Geek has a Eurogamer Expo preview of The Witcher 2:

The second part of the demonstration featured a cursed battlefield with hundreds of ghostly soldiers taking part in a battle. Gop points out that hundreds of character models on-screen at one time is only possible with The Witcher 2′s all new tailor made engine. The soldiers were merely images from the past and did not attack Geralt, but a demonic presence in the form of an impressive looking boss soon made his presence aware. The boss could be defeated in this early build, but we can honestly say we saw enough to know that The Witcher 2 is sure to excite fans of the original as well as gaining new ones in the process.