But while shows are being pulled from Warner Bros' streaming library, the studio did announce numerous new projects, such as a new season of The Amazing World of Gumball, more Adventure Time content, and a preschool reboot of Foster's Home for Imaginary Friends. “Scooby-Doo is like a vampire. You can’t kill it," Robert Alvarez, a retired animator, told Bloomberg when speaking about the future of Cartoon Network. It's not just animated IP that Warner Bros is banking on. The Harry Potter HBO series is about to enter production, where it plans to tell the story of all seven books for seven seasons.