James Gunn says the treatment for his 'Superman' sequel is 'totally done,' and that shooting will begin 'much sooner rather than later.'

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."

"Superman's" quick turnaround from theatrical release to being available on-demand is mostly due to "Peacemaker" Season 2.