It was 2013 since Iron Man fans last saw their favorite billionaire industrialist in the big screen. It has been two years and they are all waiting for the next installment, the "Iron Man 4." Unfortunately, there are reports that the much-awaited sequel is not yet happening anytime soon.

According to CinemaBlend, it has been reported that Marvel has no plans to continue doing the fourth installment of Iron Man until 2020. The last movie earned about $1 billion in the box office and made the much-loved genius inventor to do supporting roles for Marvel Cinematic Universe.

However, this would not be the last time that superhero film enthusiasts got to see Tony Stark, played by Robert Downey Jr. He will also be seen in other Marvel movies like the much-awaited "Captain America: Civil War," "Avengers: Infinity War Part 1" and "Avengers: Infinity War" Part 2.

Furthermore, Marvel has to look for another artist who will take the role of the robotic superhero as the 50-year-old actor's film contract with Marvel will come to an end. Also, they are opting for recast as Downey is already aging, or maybe because he's just really asking for a higher salary.

Meanwhile, on his appearance at "The Late Show" on Oct. 7, 2014, E! Online cited that the father-of-three told the host David Letterman that "There [are] no plans for an "Iron Man 4." The 68-year-old producer then asked, "Why not?" and he responded with, "There is no script for "Iron Man 4." They do have a plan and I think they're going to announce it [soon]."

However, the writer didn't give up and once again asked if there's any possibility that the next installment will pursue. "Just between us, no. But, I'm going to do other stuff with Marvel. I'm still going to be involved with Marvel and there's going to be plenty of fun stuff to happen," Downey disclosed.