A few weeks back there were confidential photos of the LEGO Alien Conquest sets. In those pics there were shots of a new alien 'brain sucker' that fit over the top of a standard minifigure head. I didn't come across any photos of this in the pics from the Nurnberg International Toy Festival; however, thanks to Peer Kreuger, and his photoshop skills, we have a image that gives you a sense of what to expect.
I've also seen mention of an 'abduction feature' and 'autopsy themes' in play sets. Alien Conquest is shaping up to be the major non-licensed play theme coming this summer!
(Picture via Peer Krueger's Flickr stream)