One of the helmets is colored blue which could be the helmet that Proto-Ultron crushes in the official trailer. I’m going to venture a guess and say this helmet will be in the Attack on Avengers Tower (76038) set since that Proto-Ultron scene took place at the Tower.
The other helmet is your typical red and gold Iron Man helmet which looks like the rumored MK XLIII (MK 43) armor that will be in the Avengers sequel. It’s possible that this version will be in the Iron vs Ultron (76029) set or in The Hulkbuster Smash (76031), both of which will include Iron Man in the set.
I won’t be posting the images here but you can check them out over at the Eurobricks link above.