(This may be a bit spoilery, but I'll try to keep it to a minimum.)
So after hearing all the awesome about Witcher 2.0, I decided to watch the trailer for the 360 version of the game and I was a bit surprised to see a cutscene that clearly depicts Letho Assassinating Demavend on a ship.
Now, I've only played through once, and I did on Iorveths side. I did miss out a couple of quests here and there, but mainly I got a lot of information about Letho and what was going on. However, I never got so much information about how Demavend actually died. Is this a cutscene from the original Witcher game? Is this brand new for 2.0 and/or the 360 version? I found it really interesting because it really does look like a pretty intense scene, and definitely goes along with Letho saying he barely escaped alive. I wonder if this is new because the scene with Foltest in Vizima looked more like Witcher 2 Foltest than the original. I could be wrong in this, but it's just what I gathered from one trailer.
Here's the trailer for anyone else curious: http://www.gametrailers.com/video/gc-11-the-witcher/719204