Geek Tyrant posted some info from an extra on the set of
Batman V Superman, which revealed that one scene being shot sees Batman break into Lexcorp to steal kryptonite. They also reckon that Lex Luthor himself will have somehow gotten his hands on General Zod's body. Well, Badass Digest now claim to have confirmed that they were on the right track..but added some juicy details of their own.
Lex has been gathering pieces and debris from the World Engine and he has used them to synthesize Kryptonite. Meanwhile he has also gotten ahold of Zod's corpse, and it is the key to his master plan to defeat Superman. He uses that tissue to... well, that would be spoiling. But Superman hasn't been defeated many times in the past. You can probably connect the dots from here.
Yes, they are suggesting that Lex will use Zod's remains to somehow create another villain to take Superman down. Which villain? Well, they also post this image:
That would appear to be Doomsday. Now keep in mind that a lot of this sounds like it comes from that
leaked fake script that was doing the rounds, but that doesn't mean it also won't inform the plot of the actual movie. Badass Digest have been accurate in the past at times, and others..not so much -- we'll just have to wait and see. This does sound really cool though I'm sure you'll agree.