From the DC blog:
This fall, kneel before Zod!
In his Villains Month one-shot, Zod’s origin will be revealed. Not only will you see the infamous Superman villain in his New 52 debut, but you’ll also see him at an early age on an abandoned island and fighting monsters following his parents’ death. It’s Jor-El who acts as Zod’s ticket off the island, and the brotherly alliance they form is something that will be explored. It’s also something that might be the catalyst of some of the friction between Jor-El and Zor-El …
Then, in this fall’s SUPERMAN/WONDER WOMAN, fans can look forward to Zod taking on the role of the series’ first major villain. As for Doomsday? There’s a connection there too, but I won’t say anything more about that just yet.