Rocksteady posted a quick AMAA for Batman Arkham Knight on Reddit. While they chose discretion and didn’t really reveal anything new or exciting, they did confirm this tidbit that’s confused some fans.
Both the Harley Quinn and Red Hood DLC that we’ve already announced are story missions! You get Harley’s story by pre-ordering; Red Hood is a retailer exclusive depending on where you live (Gamestop in the USA, other regions still TBD).
So there you have it. No word on whether the Red Hood DLC will tie in to Arkham Knight directly, but at least we’ve now verified for sure this isn’t just DLC where you play over Bruce’s story.