Spoilers Begin Here.
Brainiac shows up, teams up with, then double crosses Lex. He’s here as a result of Superman’s trip to Krypton before the beginning of the previous film.
Jason, Superman’s son, is killed in the film.
Spoilers End Here.
If that’s true – you can count me out of this entire Superman film franchise. That’s a cheap way to get out of a hole that they dug themselves into, and if they choose that route, I’m out.