Batman V Superman is setting up the DC film universe.
Batman v Superman Like You’ve Never Seen It!
Midway in the film, Diana Prince (Gal Gadot) and Bruce Wayne (Ben Affleck) went through Lex Luthor’s (Jesse Eisenberg) files and saw glimpses of meta-humans. Luthor has been tracking meta-humans, including Diana, thus the reason why she’s in Gotham.
She is trying to retrieve her photo from Luthor. The photo is a screenshot from her upcoming stand-alone movie, Wonder Woman, coming in June 23, 2017.
They saw a short file video of a young man running like the speed of light, trying to stop a thug. The man is The Flash, to be played by Ezra Miller and his movie is coming out in March 23, 2018.
Second, they watched a clip which was shot from the ocean using a submarine camera. A bearded man with a trident looks at the camera, then zooms through the waters in incredible speed. It was Aquaman (Jason Momoa) and his movie is scheduled to be on July 27, 2018.
And last, which was a grim file video to watch, was a scientist working on a human torso with extraterrestrial technology to resurrect a young man. The man awakens and screams, prompting the older man to turn off the camera. That was Cyborg (Ray Fisher) and his movie is scheduled to be released on April 3, 2020.