Though not exactly surprising, it has been confirmed via Chris Evans that both parts of Avengers: Infinity War will be shot back to back. In an interview, Evans noted how the upcoming schedule for Captain America: Civil War, and Infinity War will affect him:
“You know, you plan around the Marvel responsibilities. You have to. We start [Captain America: Civil War] in a couple weeks, and then that shoots until August or something like that. August or September. Then I’ve got some downtime and I can do with it as I please. I don’t know if I want to take time off or go pursue another directing job or find a movie to act in or, you know, do whatever I’m creatively inclined to pursue or wait, relax, enjoy my life. And then we start the Infinity War, I think, some time in the third quarter. Fall or winter of 2016. That’s going to be like nine months to shoot both movies back to back.”
Again, this isn’t surprising, as most movies who do “part” films shoot them back to back to save time and money. Not to mention the fact that it’s not an entirely separate movie in some ways, it’s just that the story is too long too contain in one film.
Regardless, this is good news, and will assuredly ensure that both movies will release on time in 2018 and 2019.