Five new conceptual artworks for Alien vs Predator have been found on ArtistLogic.com in a portfolio for Richard Bennett, one of the storyboard artists on AvP. The one below shows Miller at the Whaling Station while the second features the throwing knifes (previously seen in the first featurette). The third and fourth are large black & white images with multiple storyboards on and the final one, features a cool shot of a Predator.
Four more are on the next page. Thanks to Craig for the link.