I mean they probably have a certain amount of production material archived not all of which has been seen by us. We're still getting new photos from the set of Alien, and that movie's older than even the original Predator.
I'd love it to mean "they secretly have a new movie, TV series, shared AVP universe and a AAA open-world video game made by Rocksteady all in the works", but I'm not getting my hopes up that this dev meant anything more than that.
It could just be stuff like unreleased concept art or rejected designs for the various movies that have never been made public, that sort of thing.
Hmm. Unfortunately when I think unreleased concept art and rejected designs, my mind immediately goes to the pred-monkeys and spiders.
Soooooo I guess I'll put you down as a "no" for "playable pred-monkeys"?