Thanks to Marvel Studios president Kevin Feige and actor Chris Evans we have some more details on Joss Whedon's Avengers: Age of Ultron. During an interview with Total Film, they talk about Black Widow and how the sequel will explore the backstory of the character, and reveal that there has been some movement on a solo movie.
From what we've seen of Captain America: The Winter Solider so far, it looked a little like maybe we would get some more information on the past of Scarlett Johansson's Russian spy, Natasha Romanoff, but it looks like it will be explored in more depth in Age of Ultron.
"Black Widow's whole arc [in The Winter Soldier] is coming to terms with her history - that she's been a spy, and spies aren't necessarily trustworthy."
Feige went on to discuss Age of Ultron and the possibility of a solo movie saying,
"We start filming the next Avengers film at the end of March. [Black] Widow's part in that is very big. We learn more about her past and learn more about where she came from and how she became in that film. The notion of exploring that even further in her own film would be great, and we have some development work with that."
I would love to see a standalone Black Widow movie happen. She's a great, kickass character who I think could hold her own. As far as what else they are doing with Age of Ultron, Feige continued,
"We wanted to change the dynamic of the cinematic universe with this film. We wanted Cap and really the entire cinematic universe to be very different at the end of Winter Solider than it is at the beginning. Therefore when we meet the Avengers at the top of Age of Ultron, it's a very different landscape than we left them at the end of the film. Partially that's because we love the rhythm that the comic books have developed - each of the characters appear in their runs, occasionally they get together for a big event or crossover series, they part again, and then they come back together again."
I just love what Marvel has done so far with these characters, and it has been fun watching them expand on them. We can only hope they keep delivering better and better movies.