On a wholly unrelated note... this is a post from last July:
Originally Posted by Spider-Fan
I think Thor 2 will take place after Avengers. I don't see it coming before. I actually can see Thor 2 maybe leading into Cap 2 by releasing the Red Skull back to Earth.
Who would like to see something like this as the end-credits scene Thor: The Dark World, since CA:TWS is the next movie after T:TDW? It's odd to me that no one has been discussing the Red Skull's whereabouts in this forum recently.