Marvel has been producing movies on certain superhero characters every two years or more which give the actors time to do other things than do films for the studio, cites RDJ.
Downey said that now that he is already 50 years old, he has to also think whether he is still fit for the role or not because if he thinks he can no longer hack it, he is more than willing to give it to others and take over from there just to keep the franchise going, somehow also lending credence to initial reports that child actor Ty Simpkins is being considered to don the iron suit for “Iron Man 4.”
While there have been a lot of talks about “Iron Man 4” since last year, not one of them has been carved in stone so everything is mere speculations at this point.