Horror magazine Fangoria recently spoke to Ian Whyte. It would seem they where at the same con as our forum member RakaiThwei. They confirmed the only one Predator rumor:
“Greg and Colin Strause, the directors, were very particular about the vision that they wanted to see in this film,” Whyte says, “and of course, being a movie called ALIEN VS. PREDATOR, that whole concept is featured heavily.” And Whyte was in the thick of it at all times, because as he notes, “There’s only one Predator [in the movie], but there are plenty of Aliens.”
The rest of the article doesn’t mention anything new though. You can view the original article here. Thanks to leprechaun62689 for the heads up.