The wait for Captain America: The Winter Soldier is nearly over. Since the film is not only a continuation of Steve Rogers' story but also another step along the over-arching path that the Marvel cinematic universe is moving down, it will likely open up many more questions about what's to come in Captain America 3, The Avengers: Age of Ultron and beyond.
While some of the Marvel franchises have a reshuffle of talent between movies, screenwriters Christopher Markus and Stephen McFeely were called back to write The Winter Soldier after the success of Captain America: The First Avenger. They're now putting together ideas for Captain America 3, which is expected to be released in May 2016.
At this point in the development stage, the eventual finalized plot of Captain America 3 is still unknown even to the screenwriters themselves, but that doesn't mean that they don't already have ideas in the works. In an interview with Den of Geek, Markus spoke in vague terms about the kind of direction they're planning to take, before dropping a fairly major hint.
"We’ve definitely set out on a more realistic road in the Cap movies, you know. Even more grounded than in the other MCU movies. And so it kind of rules out Cap fighting the Dinosaur Man or something like that. There are some that aren’t gonna start and other ones that -- I mean there’s a couple we’re playing with right now that we really want to take elements from. Which we'll not reveal... All I’m saying is psychotic 1950s Cap."
The last part of that might not make much sense to those unfamiliar with the comics, but Markus is almost certainly referring to the fourth Captain America, William Burnside - a super-fan who took up the mantle while the real Steve Rogers was cooling off in the North Atlantic. Due to improper use of the Super Soldier Serum, both Burnside and his sidekick Jack Monroe (who took on the role of Bucky Barnes) eventually went insane with paranoia and had to be knocked out and placed into cryogenic stasis. This is what happens when cosplay goes too far.
It's an interesting direction for the Captain America movie franchise to take, considering how tightly Burnside's story was tied to 1950s politics and the anti-communist sentiment of the time. The Red Skull re-emerged during this story arc as Albert Malik, a Communist who disguised himself as US Senator Joseph McRooter and tried to destabilize America through a program of McRooterism: accusing innocent America civilians of being communists.
This hint definitely suggests that Markus and McFeely want to continue with the political espionage thriller tone that's already evident in the trailers for Captain America: The Winter Soldier (not to mention the first 10 minutes of the movie). It will be interesting to see whether this plot spills over into the team-up movies as well.
Captain America: The Winter Soldier is set for release on April 4, 2014, and Captain America 3 will be in theaters on May 6, 2016.
Source: Den of Geek