Just as Dune: The Sisterhood begins production for HBO Max, Deadline has reported its creator Diane Ademu-John is exiting her role as co-showrunner.Ademu-John was serving as co-showrunner with Alison Schapker (Westworld), but is vacating the role to focus on other commitments. She is not leaving the show entirely, though, as she will remain an executive producer and […]