Potentially the first set pictures from Predators have been posted in ForumsHawaii. The poster claims he worked as Security on the movie when they were shooting in Hawaii last year. The first picture is at the top of a waterfall and the other two are of the dog cages with what could be a parashoot on top of one.
The pictures seem legit. It fits in with the story for those that have read the script. Thanks to Keith for the news.