According to the site, it's still unclear if the DLC is one of the three updates promised as part of the game's season pass. In addition to new weapons and skills, season pass DLC is expected to add to the game's story and supply new characters. Earlier this year, a listing in the LinkedIn profile of a 2K Games senior animator suggested that upcoming DLC could also provide a new companion character.
Irrational released its first BioShock Infinite DLC, add-on pack Columbia's Finest, last week. The pack includes weapon upgrades, additional items and more.
We've contacted Irrational Games for comment and will update accordingly.