Independent developer Obsidian Entertainment, in partnership with indie powerhouse publisher Versus Evil revealed during their panel at PAX West the next major paid DLC release, titled Seeker, Slayer, Survivor for Pillars of Eternity II: Deadfire, will release on September 25th.
Source: N4G PC Pillars of Eternity II: Deadfires next DLC is launching on the 25th of September