The fan Facebook page for the 2017 screen adaptation of Stephen King's It recently announced the casting of six members of "The Losers Club," the name bestowed upon the main group of friends in the Stephen King tale.
https://www.facebook.com/StephenKingsItRemake/photos/a.1120453477974942.1073741829.443581045662192/1120497567970533/
The leader of Stephen King's group, Bill Denbrough, will be played by Jaeden Lieberher, clearly the biggest name among any of the young Losers Club cast. Lieberher has already taken on big roles opposite megastars like Bill Murray and Melissa McCarthy in 2014's St. Vincent, as well as Michael Shannon and Kirsten Dunst in 2016's Midnight Special. Lieberher's performance in Midnight Special was especially well-received, and Cinema Blend states 13-year-old Jaeden should be able to do ample justice to Stephen King's horror masterpiece.
Lieberher as Bill is the only one of the Losers Club casting choices that has been officially announced for the Stephen King adaptation, and so it is the one receiving press coverage from major media sources. The casting of several other child actors for the film has also been revealed, though. Although most of said actors are not actually tied to specific characters yet, Stephen King fan communities like the "Stephen King's It Remake" Facebook group have put their expansive Stephen King Knowledge to work to piece together which cast member will depict which member of the Losers Club.
Eddie Kaspbrak, Stephen King's asthmatic "mama's boy" who serves as one of the group's larger presences in the Losers Club, will be enacted by Wyatt Oleff. Oleff's acting resume is not nearly as star-studded as Lieberher's, but he did play a small role in 2014's Guardians of the Galaxy when he portrayed the young version of Peter Quill. Oleff's clean-cut, innocent look makes him a great fit for Eddie Kaspbrak.