Callie Kloves, the daughter of Harry Potter screenwriter Steve Kloves, wrote the screenplay based on Rudyard Kipling's book. The story follows a young Indian boy named Mowgli, who was raised by wolves and other animals in the jungle. The book is now public domain.
Warner Bros. will try to find a replacement director fast, since they are competing with Disney's own live-action adaptation of The Jungle Book, which Jon Favreau is attached to direct from a screenplay by Justin Marks. No cast members are attached for either project.
Alejandro González Iñárritu recently wrapped production on Birdman, and he is also attached to The Revenant for New Regency.