A producer is finally offering some insight into the future of Night Has Fallen and the rest of the franchise. The Has Fallen movies began in 2013 with Olympus Has Fallen and was followed by London Has Fallen in 2016 and Angel Has Fallen in 2019. Olympus was a smash hit with $170 million at the box office on a $70 million budget, and the other films have been just as successful. Despite establishing a pattern of a new movie every three years, the upcoming Night has been experiencing serious delays. After so much time away from theaters, the future of Night Has Fallen appears uncertain.
https://screenrant.com/night-has-fallen-movie-future-gerard-butler-franchise-producer-response/