It appears as if Zack Snyder will feature Arkham Asylum in the Justice League movie.
The Justice League movie listing on IMDb has been updated which has Bruce Johnson and Daniel Eghan as playing Arkham Guards.
Arkham makes sense as part of the Justice League movie as it recently has been confirmed that Jesse Eisenberg will reprise as Lex Luthor, who was last seen confronted by Batman at the end of Batman vs. Superman and being shipped to Arkham Asylum.
Arkham Asylum is also rumored to be a big factor in the Ben Affleck Batman movie.
With Arkham Asylum a part of the Justice League movie, it's possible Snyder could give us nods and Easter Eggs to other Batman villains.
(via reddit)
"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.
Synopis:
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.
