New Justice League Image Includes Henry Cavill's Superman
A Redditor posted the Justice League image which features Superman hovering above the League.
Marketing surrounding Superman for Justice League has been few and far between as apparently they are keeping the return of Superman a bit of a secret.
Last we saw of the Man of Steel was in Batman v. Superman when he sacrificed himself while battling the Zod Doomsday creature; however, the soil did rise on his grave obviously hinting at his come back in Justice League.
Regarding Superman's return, it's actually rumored that Superman might returning as evil for the Justice League Comic-Con trailer.
Here are some other images of Superman in Justice League promos:
"Justice League" has a November 17, 2017 release directed by Zack Snyder starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Jason Momoa as Aquaman, Ezra Miller as The Flash, Ray Fisher as Cyborg, J.K. Simmons as Commissioner Gordon and Willem Dafoe an Atlantean, Nuidis Vulko.
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.