None of the footage has made its way online, but with WB showing off footage from the two movies, more than likely new trailers and/or footage for Batman Vs. Superman and Suicide Squad will be revealed at Comic-Con as well.
Update: The footage shown is described to be a roll call with every character revealed in detail. Margot Robbie's Harley Quinn is featured as a major part of a scene that was showed off, with Jared Leto's Joker laugh revealed.
Update #2: Jai Courtney will be in attendance at Comic-Con for Batman vs Superman and the Suicide Squad panel.
WB is speculated to have a major presence in Hall H Saturday night, July 11th, at Comic-Con as Jesse Eisenberg has already confirmed he will be in attendance for Batman Vs. Superman, which more than likely means the other cast members, Ben Affleck, Henry Cavill, Gal Gadot, Jason Momoa and more, will also be present in addition to director Zack Snyder.
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release; "Suicide Squad" hits August 5, 2016..
Batman V Superman Trailer: