IRON MAN 4 DETAILS
So what we know is that Robert Downey Jr. use to say that he would never do any Iron Man beyond 3, but then he went to the "Daily Show with Jon Stewert" and said that he was in renegotiations about his contract, and he winked at Jon Stewert and/or the camera.
He didn't say what he was in renegotiations about, but it couldn't possibly be about anything else but Iron Man, seeing as he has only done 2 Sherlock Holmes movies so far, with the 3rd Sherlock Holmes movie being in 3D.
The reason why Robert Downey Jr. doesn't want to do more then the first 3 of any movie franchise, is because he believes that after part 3, that the movies start to go downhill from there.
So it's a safe bet that he probably knows something about the next 1 or so Iron Man movies, to keep him around to do Iron Man 4 & up.
And it's safe to say that it will come out on May 4th LOL.
Plus if the Studio who made the first 3 Iron Man movies have had their contract run out, then maybe Disney will make Iron Man 4 & up, or maybe Disney will renew that studios contract for them to make more Iron Man movies.
