Last month fans of Robert Downey Jr. were happy to catch him on 'The Ellen DeGeneres Show' as he appeared to promote his new film, 'The Judge'. However, the veteran actor went ahead and hinted at an upcoming 'Iron Man' series installment that has fans ecstatic.

After quite a lot of speculation and rumors surfaced about an upcoming installment, Downey Jr. has confirmed that there is not an actual 'Iron Man 4' movie in the works, but that he's working on other projects for Marvel including the new 'Avengers' movie.

Not long ago, he told David Letterman that while there is no actual script for 'Iron Man 4' as of yet, there's a chance that the franchise can extend into a fourth feature film.

It is now public knowledge that Downey Jr. has signed another contract with Marvel to work on the new 'Avengers' movie, as the iconic superhero, Iron Man.

Evidently, as the 'Iron Man' series of films is one of the highest grossing franchises of all time, there's a good chance that Marvel would endeavor to prolong the series as much as possible. However, if that's the case, then a change in the cast (with regards to lead role Iron Man) might just be what's in store for Marvel movie fans.

Recently, the Marvel Universe was swarmed with even more rumors that if there is another 'Iron Man' movie, there will be another actor to replace Downey Jr. The word is that Marvel is looking for a much younger actor. Rumors are floating around that one of the stars of the new 'Jurassic Park' movie would play a much younger version of Tony Stark if there is going to be and 'Iron Man 4'.

While fans of Robert Downey Jr. should be happy to watch him on the big screen in the upcoming 'Avengers: Age of Ultron' film, there's still no word of his part in a projected 'Iron Man 4' film.