It has been something discussed for a while now, is Robert Downey Jr. going to return once again as Iron Man in another solo movie? I think until recently the consensus is that he would not, that his final appearance as Tony Stark would be reserved for another Avengers film or something big like that.
Well today, Robert Downey Jr. was on the Ellen Show promoting his new movie The Judge. During his appearance Ellen questioned him on whether he was doing another Iron Man movie, which he finally let out that it was happening. So Iron Man 4 is happening, and Robert Downey Jr. is reprising his role as Tony Stark. Check out the video below. (Source: The Wrap)