Few things. one being that the 1/6th figure is primairlay a shrunk down version of the PF, which unless I'm mistaken had all of that?
Another is looking at how they're designed in the image that we have been teased, even with its washed out Photoshop effects, we can still see pivit points and hinges. As well as a rised section surrounded the upper arm piston, likely to reinforce the sliding mechanisim.
Top off all that with the nessecary RnD Time that this guy has seen, and the fact that he's releasing AFTER the Tamashii figure.
So i'll revise my original statement. It's far more likely that he wILL have them than won't. All signs point to it.