Captain America: The Winter Soldier is in pre-production, and the role of the female lead is currently up in the air.

FORBES: Scarlett Johansson to Appear in Captain America 2. So Where's the Black Widow Movie?

What if Thor: The Dark World and Captain America: The Winter Soldier end up being received by moviegoers as Avengers 3 and Avengers 4?

FORBES: Is 'Iron Man 3' Actually 'The Avengers 2', Or Was 'The Avengers' The Real 'Iron Man 3'?

That could boost upcoming Marvel movies such as November's "Thor: The Dark World" and next April's "Captain America: The Winter Soldier, " both of which are sequels.

WSJ: Marvel's 'Iron Man 3' Takes in $175.3 Million at Box Office

Disney dubbed the next slate of superhero features as Phase 2, with plans for Thor: The Dark World, Captain America: The Winter Soldier, Guardians of the Galaxy, The Avengers 2, Ant-Man and possibly more.

FORBES: Disney Pushes To New Highs As Investors Weigh "Iron Man 3" And Q2 Earnings