Latino Review reports these as the confirmed members in the movie...
Superman, Batman, Green Lantern, Wonder Woman and The Flash, with possible cameos for Martian Manhunter and maybe one other.
Let the gnashing of teeth begin.
I do wish they'd keep Batman and Superman to their own, seperate realities. Head up the JLA with a Supergirl, not Kara, but Kal-El if he'd happened to have been conceived and born female.