From what little I can see in that pic it's shaping up to a fine start.
In that other thread someone pointed out that the Tracker maquette sculpt was on another work table. So this may indeed be the piece that Nicotero's group is doing for Sideshow.
If it is, I'm glad to see that they are atleast trying to match it up with the original Predator release (w/partial shoulders and chest incorporated into the display) as opposed to the way ADI handled Wolf for Sideshow on that awkward looking base.