Even with a slew of heart-pumping movies, fans are still waiting for further announcements on whether "Iron Man 4" will still make it to the MCU.

Several reports have already claimed that a fourth installment could have a slim chance of happening.  Considering how old Robert Downey Jr. will be at that time, sources are almost certain that another solo flick will not be underway.

However, RDJ surpirsed fans when he recently announced that their will be an "Iron Man 4," it's just that, it won't be the movie Marvel fans are thinking of. "In a way it's Cap 3 but for me it's like my little Iron Man 4 and then it's back to the thing we all recognize," he said according to Comicbook.com.

"Everything pulls over to the side of the road when the thunder of an Avengers thing comes through because that's how it is until it changes. If it changes," he continued.

Previous rumors claimed that Robert Downey Jr. will still reprise his role as Tony Stark in the next "Avengers" movies, but it could be possible that he will be replaced should "Iron Man 4" get the green light.

"By that time [2020] Robert Downey Jr. would be 55 years old, which could make it more difficult for the actor to continue playing an action-heavy role such as that of Tony Stark aka Iron Man," Christian Today stated.  "If the movie were to happen, it is possible the role of Tony Stark could be re-cast."

"Downey Jr. is also the most expensive actor on Marvel's payroll and as his involvement continues, it is possible that Disney and Marvel may refuse to take him for another movie if his fee is too high, even with the knowledge that the 'Iron Man' films have generated billions of dollars for the studios."

tay tuned for more "Iron Man 4" MCU updates here!