I'm glad they're still not revealing Superman even though its confirmed that he's joining. And I thought Snyder is no longer involved? Its Joss Whedon now.

So, while it’s difficult to quantify the exact nature of Snyder’s continued involvement Justice League (and beyond), his DGA rights entitle him to the exact same level of authority he held prior to stepping away, Joss Whedon is said to be helping him complete his vision, and Snyder still maintains some level of direct creative input through the reshoots, and presumably post production. Taking all this into account, it becomes a lot more clear why Joss Whedon isn’t expected to get a director’s credit on the movie. While he was involved in the film prior to Snyder’s departure and wrote some extra scenes on behalf of the director, Justice League‘s director credit will ultimately go to Zack Snyder, as it’s still his movie.

Director: Zack Snyder

Writers: Story by Chris Terrio & Zack Snyder, Screenplay by Chris Terrio and Joss Whedon
Based on characters from DC Entertainment, Superman created by Jerry Siegel and Joe Shuster

Producers: Charles Roven, Deborah Snyder, Jon Berg, Geoff Johns

Executive Producers: Jim Rowe, Wesley Coller, Curtis Kanemoto, Chris Terrio, Ben Affleck

Cast: Ben Affleck, Henry Cavill, Gal Gadot, Raymond Fisher, Jason Momoa, Ezra Miller

Action Adventure. Fueled by his restored faith in humanity and inspired by Superman’s selfless act, Bruce Wayne enlists the help of his newfound ally, Diana Prince, to face an even greater enemy. Together, Batman and Wonder Woman work quickly to find and recruit a team of metahumans to stand against this newly awakened threat. But despite the formation of this unprecedented league of heroes—Batman, Wonder Woman, Aquaman, Cyborg and The Flash—it may already be too late to save the planet from an assault of catastrophic proportions.