Mmm interesting, i never knew Iron Man's armour started doing its own thing... Thats pretty cool...
Could this be the first step to get to Ultron?? Just think about Tony makes a sentient armour by mistake, he reads one of Pym's thesis.. figures with his money and input, they can create a full functioning sophisticated Iron-Man-Robot-Cop thing called Ultron...
Anyways heres the screenshots from those scenes you spoke about
I think its safe to say its new armour