Captain America: The First Avenger is a new theme due to be realesed Spring 2012. The sets are known:
8862 The Birth of a Soldier, including Steve Rogers, Peggy Carter and Howard Stark. It costs 19.99$.
8863 Cap to the Rescue, including Captain America, Bucky, Red Skull and Scientist. It costs 39.99$.
8864 Flight to the Death, including Captain America, Red Skull and Hydra Pilot. It costs 79.99$.