In an interview with Empire, the Watchmen director said that David Goyer's script doesn't alter the DC Comics "canon".
"It's a different story," Snyder said. "I won't say there's a break from the canon or anything like that, but there is definitely an approach that makes you go, 'Okay, that's a way to get at it.'"
He continued: "David is very respectful of the canon and stuff like that. It has its roots in the canon and again, like I say, it has a point of view about who he is. I'm being cryptic, I know, but it's the best I can do."
Asked if his movie will track the Man of Steel's early years, Snyder replied: "I think it's early to say. I don't know."
The director also described rumours of the comic book hero facing General Zod as "just wrong", adding that "the internet has no idea what's going on".