So this new armor was spotted on the set of Iron Man III, set to come out next summer. Iron Patriot is a Marvel character played by Norman "Green Goblin" Osborne--he wears Iron Man armor decked out like Cap's shield. I kinda doubt Osborne will be in this movie, since he's a Spider-Man character, but you never know.
Since the events of The Avengers, Iron Man/Tony is more popular than ever before, and this could be a publicity stunt to capitalize on the Avengers and Captain America.
My prediction for the next Cap movie: Bucky comes back as The Winter Soldier (another Marvel character, wherein the once-thought-dead Bucky is brought back to life by Communist Soviet Union) since we don't know what Arnim Zola's experiments did to him. It would be great to Zola as well, since he was probably put to work by the Allies after Hydra was destroyed.
Oh, and the character at the end of Avengers was Thanos, an intergalatic character who's in love with Death. And he wants the Infinity Gauntlet, which is locked up in Odin's vault (you can see it in the Thor deleted scenes). Thor II, anybody?
Oh, and I want a set of vintage WWII Captain America trading cards, by the way...