https://www.cnet.com/news/it-chapter-two-release-date-cast-plot-theories-rumors/

Stephen King's It crawled back onto the scene in 2017, when the first of two movie remakes came out. The second film, based like the first on King's 1,100-page 1986 bestseller, is not a sequel -- it's a continuation of the plot, taking place 27 years after the first film. Members of the Losers' Club from the first film will be recast with adult actors, though the young actors will also appear in flashback.

Jessica Chastain, who took on the role of Bev from younger actress Sophia Lillis, tweeted a photo showing Lillis passing the story's infamous red balloon to her older counterpart.