When it comes to Avengers 4, we don't know that much about the movie yet, including a title. We do know it's going to have a monster cast just like Avengers: Infinity War, and one of the Avengers just confirmed that she is in the movie — but not a lot. Evangeline Lilly recently did a Q&A on her Instagram (via ComicBook.com) and confirmed that she is in the movie.
"I will appear in Avengers 4, not very much, so don't get your hopes up. Not going to be a ton. But I'm in there! And I'm proud to be in there, and I'm stoked to be in there."
Despite not having a huge role, Lilly went on to describe her time on set and how much fun it was to be working with such a large cast near the holidays.
"I had so much fun on the Avengers 4 film set because they made it like a party, it was right around Christmas time and it was just like they had this tent set up with Christmas carols, with Christmas lights, and music, so every time we would be on set or walk off the set we'd walk into this really festive environment and I was surrounded by all these rock stars who are super cool people in real life and we all got to know each other. Robert Downey Jr. would have us to his tent for lunch and we'd all sit down and have lunch together. It ended up being what I think a lot of fans think a lot of fans imagine its like on a film set with a bunch of film stars, which usually it isn't. Usually film stars all go to their own trailers and disappear and don't talk to one another and they get on the phone with their wife or their husband or their agent or their the CEO of a company that they're running and they've got something to do during their lunch hour, and sometimes it can be a really lonely place ot be, on a film set. But Avengers was the polar opposite of that. It was this community, and it was fun, and people were really warm and kind."
Lilly is not listed as a cast member of Avengers: Infinity War, but there is a lot of speculation that she is going to make some sort of appearance. Otherwise, we'll get to see her in action in Ant-Man and the Wasp this summer.
Summary: As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment – the fate of Earth and existence itself has never been more uncertain.
Avengers: Infinity War, directed by Anthony and Joe Russo, stars Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Chadwick Boseman, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Pom Klementieff, Scarlett Johansson, Don Cheadle, Tom Holland, Bradley Cooper, Sean Gunn, and Anthony Mackie. It will be released on May 4th, 2018.