300: Rise of an Empire is currently slated for an August 2nd release date, but some speculate that will change in the very near future as Red 2 and 2 Guns are also set to open on that date. Hence, that is why we only see 2013 on this new artwork. September perhaps?
300: Rise of an Empire was released March 7th, 2014 and stars Sullivan Stapleton, Eva Green, Lena Headey, Hans Matheson, Callan Mulvey, David Wenham, Rodrigo Santoro, Jack O'Connell. The film is directed by Noam Murro.