Iron Man 3 is coming! Raphael Gatt created this Mark XLII (Mark 42) papercraft. It has been confirmed that Tony Stark's main suit will be the Mark XLII, as opposed to what was thought to be the Mark 8 or 47 armor. there have been rumors that the suit's functionalities have been inspired by Warren Ellis' comic book: Iron Man:Extremis. Raphael also created several similar paper models: Mark 38 Heavy Lifting Suit “Igor”, War Machine Armor Mark II and War Machine Mark II Iron Patriot V2 Papercraft.
The suit's biggest functionality is that it can fly in separate pieces and "wrap" itself piece by piece around Tony, while only having to use his mind. This is due to the fact that Tony has a state-of-the-art computer chip implanted in his left forearm, and this enables him to mentally communicate to his armor .
As seen in trailers, the Mark XLII seemed to have gained some sort of "subconsciousness" . It was revealed in a later trailer that Tony had caused the suit to fly onto Pepper Potts during the Mandarin's attack on his Malibu mansion. The scene where the suit is seen attacking Pepper while she tries to wake Tony from a nightmare was that it had been programmed by tony to protect him at all costs, which is why the suit mistakes Pepper for a hostile force that was causing Tony distress.
You can download this papercraft model here: Iron Man 3 - Mark XLII Armor Free Papercraft Download