More of the film will be revealed on October 16 for the DC FanDome alongside plenty of other DC games (like Gotham Knights and Suicide Squad) and films (like The Batman).
In it, Batman can be seen laying a plan to break into Superman’s lair in order to take a Red Sun cannon.
While Batman is at the head of the table describing the heist, he is joined by Catwoman, Huntress, Green Arrow, Atom, and Captain Atom.