In 2017, Facebook partnered with fact checkers from the Poynter Institute's International Fact-Checking Network to identify and mark false content, though most ads from political candidates are exempt from this program. As of 2018, Facebook had over 40 fact-checking partners across the world, including The Weekly Standard.
Later in December 2017, Agent Cody Banks writer Jeffrey Jurgensen was also listed as a screenwriter. As of February 2018, Jessica Chastain was in negotiations to star as the adult Beverly Marsh. In April 2018, James McAvoy and Bill Hader entered negotiations to play the adult Bill Denbrough and Richie Tozier.