Now, we have word that a representative for the filmmaker has debunked the story. Take a look at the official statement released on behalf of the director.
"While he is super flattered because he is a huge fan, Zack is not involved in any way with the new Star Wars. He is currently in post on his two films, Man of Steel and 300: Rise of an Empire."
While Zack Snyder may not be involved, this doesn't mean that the project isn't happening. We reported in November that Lawrence Kasdan and Simon Kinberg are writing two different movies that will serve as spin-offs to Star Wars: Episode VII.