User blog comment:Living Machine/Marvel Movies Ideas/@comment-2198188-20130223063054/@comment-1895174-20130223211731

They've never actually stated Dr. Strange would get his own movie. Although unlikely, it's entirely possible he'll be introduced in a sequel like Black Widow in Iron Man 2.

There's also been those rumors that Whedon was actively looking for someone to play Carol Danvers in The Avengers 2, so it's possible that she'll make an appearance in Phase 3, particularly as the MCU gets more cosmic with its scope.