Disney is reportedly developing a Marvel TV series that raises questions about Captain America's fate in 'Avengers 4'

You haven't seen the last of Falcon and Winter Soldier in the Marvel Cinematic Universe.

The two may have vanished at the end of "Avengers: Infinity War" from the Thanos snap, but lets be real: They're coming back. And when they do, they'll reportedly star in a limited series on Disney's upcoming streaming service that is expected to debut late next year.

According to Variety, "Empire" executive producer Malcolm Spellman will write the series featuring Anthony Mackie's Sam Wilson/Falcon and Sebastian Stan's Bucky Barnes/Winter Soldier.

Disney did not immediately respond to a request for comment.

This isn't the first potential series spinning off of the MCU. Variety reported in September that Disney is developing big-budget Marvel shows starring Tom Hiddleston's Loki, Elizabeth Olsen's Scarlet Witch, and more.

Just as the Loki and Scarlet Witch shows could raise questions about the future of the MCU, so too does this potential Falcon/Winter Soldier series. In both the comics and MCU, the two are Steve Rogers/Captain America's best friends, so it's intriguing that they would get paired together considering what Captain America's fate could be in next year's "Avengers 4."

Actor Chris Evans recently said goodbye to the role in a heartfelt message on Twitter after the movie wrapped filming, signaling that he is retiring from the franchise.

"Officially wrapped on Avengers 4," he said. "It was an emotional day to say the least. Playing this role over the last 8 years has been an honor. To everyone in front of the camera, behind the camera, and in the audience, thank you for the memories! Eternally grateful."

It fueled further speculation that Captain America will meet his end in "Avengers 4." The character briefly dies in the comics after the "Civil War" comic event, and Barnes takes his place as Captain America. More recently, Wilson took on the role as Captain America in the comics.

A series starring both of them could be a somber one if Captain America does actually die in "Avengers 4," as the two would be reeling from his death and grappling with their roles as superheroes going forward.