https://qz.com/1272771/disney-confirms-marvels-avengers-franchise-could-go-on-infinitely/

With Avengers 4, Marvel Studios boss Kevin Feige promised us something we’ve “never seen in superhero films: a finale.” However, the movie, due out May 2019, might not be the end we’ve been led to believe.

Disney is reopening the door on the Avengers franchise after the success of its latest movie, Avengers: Infinity War, which had the largest opening weekend in movie history and was the fastest to reach $1 billion at the box office ever. That’s before it hit China, the world’s second-largest movie market.