Well, here are the pointers of the season pass.
Three dlc skins from Flashpoint(he,he, Pirate Deathstroke), and all 4 DLC characters(guessing for that season).
I am guessing that Raven, Doomsday, and maybe Black Adam(don't know if he is DLC or not) are in the pass, but not the final one.....COME ON LOBO!!!