Hayley Atwell is interested in coming back, while Tony's father Howard Stark will serve as a recurring character in this 1946 set drama series.
Screenwriters Stephen McFeely and Christopher Markus discuss where superhero Steve Rogers will be in the sequel.
Captain America: The First Avengers co-writer Stephen McFeeley says he was at Marvel last week working on the sequel's story.
The latest trailer for this anticipated Marvel adventure debuted over the weekend at the Hero Complex Film Festival in Hollywood.
Tommy Lee Jones also spoke about playing Colonel Chester Phillips in the first movie, which hits theaters on July 22.