Formerly known by the working title of 300: The Battle of Artemisia, the film will now be called 300: Rise Of An Empire, the studio said today. The Legendary Pictures film is scheduled to come out on August 2, 2013. Similar to 2006’s Zack Snyder-directed 300, the prequel is based on a Frank Miller graphic novel on Greek legend. Noam Murro is directing Rise Of An Empire. Rodrigo Santoro resumes his role from the first 300 as the Persian king Xerxes. Sullivan Stapleton plays the Athenian general Themistocles.