Originally Posted by The Infernal
I'm guessing yes and those set pics of the stunt man in the IP costume could be the reveal of the armour. I think that the War Machine armour, which is different from IM2's WM armour, will be what he wears later on when he either ditches the IP armour or it gets hijacked and is forced to change.
Pretty sure that wasn't a stunt man in the IP after all, but was, in fact, Ashley Hamilton, who's playing Jack Taggert. I'm willing to bet that was an actual plot point we saw in that set pic --- i.e., Taggert is one of Mandy's henchies, and he steals the IP armor at some point in the movie.
Also, the IM3 prequel comics kind of reveal the transition of the War Machine armors. Post-IM2 and pre-TA, Tony takes back the Mk II (War Machine) armor from Rhodey and all the Hammer mods on it, and builds him a new WM suit, the one we see in the new toys and posters.