A listing on Amazon Germany appears to confirm the upcoming release of Batman: Arkham Origins Complete Edition for PC, PS3 and Xbox 360.
The release date is set as August 21, 2014, though no details about the content have been included in the listing. We presume that the Complete Edition will feature the original Batman: Arkham Origins game which was released in October 2013, alongside all the DLC content, including the Cold, Cold Heart storyline.
Take this with a pinch of salt right now as Warner Bros has yet to officially confirm The Complete Edition.