Okay i got a link from Bryan, so heres the main features for the DVD 2 disc edition and the exclusive 3 disc steel case Blu Ray DVD:
•Commentary by Robert Rodriguez and Nimrod Antal
•Tactics of War: Featurette from Theatrical
•Fox Movie Channel Presents Making A Scene
•Motion Comics: Moments OF Extraction & Crucified
•Deleted & Extended Scenes
•Evolution of the Species: Predator Reborn
•The Chosen: Character Featurettes
I'll prob get both of those versions, have the 2 disced set but keep the exclusive blu ray set for collectors item. (seems reasonable, so why not?)
Predators: Triple Play Edition (Blu-ray, DVD & Digital Copy) (2 Discs) (Blu-ray)
Also theres a Predator Trilogy being released with Falconers bio on it:
Predator Trilogy - 6 disc boxset