Originally Posted by Jordanstine
Again this is all just speculation, especially with the remarks of Joss Whedon, etc.
Chris Evans has a 6 picture deal with Marvel: Cap 1, TA 1, Cap 2, TA 2, Cap 3, TA 3 - his contract would be done likely after Cap 3 which would be after TA 3.
Similarly, Sebastian Stan also has a 6 picture deal with Marvel:
1) Cap 1
2) Cap 2
3) Cap 3 (most likely)
It's easy to read too much into the "six-picture deal" that Marvel customarily makes with their talent. Pretty sure that Ed Norton had a "six-picture deal," and probably several other cast members of TIH, who've never been heard from again.
The six-picture deal is just an option. If the studio decides they want the actor for future projects, even if it's just cameo pop-ins in other movies/TV shows, they can exercise that option in the contract. Otherwise, I wouldn't take it to mean that anybody who signs such a contract is inevitably going to appear in six films.