It would have been nice if WB could have kept this a secret, but I guess they're trying to do whatever they can to promote the movie as in addition to Batman, a second Justice League member is confirmed for Suicide Squad.
An official cast list has been released in a press kit that reveals the order the characters will appear in the movie with The Flash played by Ezra Miller listed. It's guessed The Flash may appear somewhere in the Suicide Squad's second act.
Curiously, Ben Affleck's name is not listed nor is Batman's, which may mean the Caped Crusader is just in the movie as a cameo and no Bruce Wayne. Or perhaps the list is not complete.
It's been speculated The Flash is in Suicide Squad due to lightning featured in the trailers.
Ezra Miller was recently featured in the Justice League Comic-Con trailer.
"Suicide Squad" has an August 5, 2016 release date directed by David Ayer starring Will Smith as Deadshot, Jared Leto as the Joker, Margot Robbie as Harley Quinn, Cara Delevingne as Enchantress, Jai Courtney as Boomerang, Joel Kinnaman as Rick Flag, Viola Davis as Amanda Waller, Adam Beach as Slipknot, Karen Fukuhara as Katana, Adewale Akinnuoye-Agbaje as Killer Croc, Jay Hernandez as El Diablo, and Scott Eastwood in an unknown role.
It feels good to be bad… Assemble a team of the world’s most dangerous, incarcerated Supervillains, provide them with the most powerful arsenal at the government’s disposal, and send them off on a mission to defeat an enigmatic, insuperable entity. U.S. intelligence officer Amanda Waller has determined only a secretly convened group of disparate, despicable individuals with next to nothing to lose will do. However, once they realize they weren’t picked to succeed but chosen for their patent culpability when they inevitably fail, will the Suicide Squad resolve to die trying, or decide it’s every man for himself?