The title says it all, and CBR has the deets
"The film (which doesn't have a
title as of yet) will come from a screenplay by frequent Nolan collaborator David S. Goyer and will apparently feature the villain General Zod – made famous in the classic Richard Donner/Christopher Reeve versions of the character."
So the last Superman movie saw Superman vs. Lex Luthor and real estate, and now this one sees Superman vs. General Zod.
I swear I've seen this pattern before...