On June 8th, DC and Warner Bros. will release three seven-minute shorts, entitled Justice League: Gods and Monsters Chronicles, on Machinima to serve as a prequel to Bruce Timm’s animated film to be released in July. Harley Quinn has already been shown to be a featured character in the shorts, designed to look more like the New 52 version of the character.
Machinima has already announced a second season of Gods and Monsters Chronicles and DC has started an entire product line based on the film including action figures and a digital-first prequel comic. Look for the full movie from Warner Bros. & DC entertainment on July 28th.
Source: Comic Book Resources