On the PlayStation Blog's PS Store update for the Dungeon Defenders launch, it specifically cited that, in addition to releasing Dungeon Defenders itself, also available for download would be:
"Dungeon Defenders PlayStation Plus Exclusive DLC (Free & Exclusive to PlayStation Plus members )"
But I could not find any information about what this DLC actually IS. Does anyone know what this content is? There is nothing specified on the page except for that quote, and I was unable to find specific details of this DLC.