Update 18/01/10: Images have been removed at the request of 20th Century Fox.
This is an important day, today we have the first set pictures from Predators including pictures of the cast and the Predators themselves. You can see an unmasked Predator in the background of the one below. Check out the other pictures in the forum or the Gallery for a look at the masked Predators themselves.
Huge thanks to DeadDay for posting them.