SYNOPSIS: 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.
Directed by Zack Snyder, this marks the big screen debut of the Justice League, featuring an all-star lineup: Ben Affleck, Henry Cavill, Gal Gadot, Jason Momoa, Ezra Miller and Ray Fisher.
Heroic Hollywood also say that Steppenwolf is also the main villain.
They state “Inside the War Room we saw a darkened outline of what Steppenwolf will look like in the film which is still being finalized. Steppenwolf will sport a totally different look than what was previously seen from the deleted Communion scene above from Batman v Superman. Having seen the motherboxes in person, they don’t look anything like the Communion scene either.”
There is also an upgraded Batmobile (below).
Not sure if the below poster is just fan art but it’s pretty sweet nonetheless.
Source: Heroic Hollywood