It appears that the Risen series will continue in 2014. Developer Pirahna Bytes has confirmed the existence of the next game in the action-RPG franchise, called Risen 3: Titan Lords.
The reveal comes courtesy of the latest issue of Germany's "PC Games" magazine (via CVG), which was sent out to subscribers earlier today. Very little concrete information is known about Risen 3 so far, though PC Games subscribers have been compiling aspects of today's reveal into the World of Risen fansite, noting that the game will take place primarily in middle Europe with at least three playable factions.
Risen 3: Titan Lords is expected to release in August on PC, Xbox 360, and PS3.