James Gunn, director of 'Superman' starring David Corenswet, reveals he has completed the treatment for the next installment in the 'Superman' saga. F

James Gunn ’s new DCU has launched on the big screen, and Superman is officially a hit. While other DC projects were already well underway, Superman’s success means the franchise can officially hit the gas. It seems James Gunn has already just done that too, as he’s already hard at work on the next chapter of the “Superman Saga."