Just two days after Marvel confirmed that Captain America: The Winter Soldier and Captain America: Civil War directors Anthony Russo and Joe Russo are directing Avengers: Infinity War Part 1 and Avengers: Infinity War Part 2, a new report reveals who will pen this two-part adventure. Christopher Markus and Stephen McFeely have signed on to write both Infinity War movies. This shouldn't come as too big a surprise, since they wrote 2011's Captain America: The First Avenger, last year's Captain America: The Winter Soldier and the upcoming Captain America: Civil War.

Badass Digest reports that the writers' deals are done, and expect it to be confirmed very soon. Aside from their work on all of the Captain America movies, the writing duo also penned Thor: The Dark World and created the ABC series Marvel's Agent Carter. The site also speculates that Captain America: Civil War, the first of nine Marvel Phase Three movies, will help set up "a lot of the stuff that will pay off in Infinity War. The site also claims that Thor: Ragnarok, slated for release in November 2017, will alter the MCU in the same type of way that Captain America: The Winter Soldier did last year.

There is also speculation that the end of Marvel Phase Three could see the departure of key players behind the scenes of this sprawling universe. Marvel Studios president and producer Kevin Feige's contract with Marvel is up in either 2018 or 2019, which could mean that Avengers: Infinity War Part 2 could mark the end of this current era of Marvel movies. Of course, the studio is already planning out their Phase Four lineup, but the end of Marvel Phase Three, which has essentially been teased from the very beginning, could be the point where Kevin Feige says goodbye. It's also worth noting that Joss Whedon isn't attached to direct any more Marvel movies after Avengers: Age of Ultron hits theaters next month, so it may be feasible to speculate that a changing of the guard may be coming at Marvel Studios. What do you think about these details? Chime in with your thoughts below, and stay tuned for more updates.