Check out what Muschietti explained below:
Stephen King has to approve everything.
But it was really informal this time.
Ive had a close relationship with Stephen King since I made the movies.
He writes to me, and I write him back.
Its an honor for me, and I consider him a friend.
He said, “Lets do it!”
Then we showed him where we would take the future seasons of the show.
IT: Welcome to Derry is a prequel set in the 1960s that explores the origins of Pennywise the Clown. The narrative delves into the early events in Derry, Maine, providing a backdrop to the terror later depicted in the film adaptations of Stephen King’s novel, IT.
