Not that this should be a surprise to anyone, but just in case, Marvel is already planning sequels to both Thor and Captain America: The First Avenger.
Marvel Studios' president Kevin Feige said in a recent interview that the studio is in the process of developing a sequel for each, with the writers working on [...]
Marvel Studios producer Kevin Feige hints at what we can expect from 'Captain America 2' and 'Thor 2' - as well as a possible Hawkeye spin-off. After reading this article, people also read: When Will ‘Captain America 2? Take Place? ... Read Post
They haven't even opened yet, but plans are in place for sequels to Thor and Captain America. Marvel Studios head Kevin Feige says sequels to both films will happen after The Avengers. Read Post