A new still from Batman v Superman: Dawn of Justice released this week via Empire heavily hints at the arrival of Darkseid.
Take a look:
Carved into the ground between Batman and the smoldering cityspace is the Omega symbol which Darkseid has used frequently. The image appears to be from the same "Knightmare" dream sequence first witnessed in a trailer, with Batman being pursued by a group of unidentified winged creatures that some suspected are Parademons and culminating with a menacing Superman unmasking a chained-up Bruce Wayne.
Batman v Superman: Dawn of Justice opens in theaters March 25.