Though it has a headline saying "Art Director, Unannounced Project," this Blizzard job posting also has a sub-heading that flat out says "Diablo," which seems like a pretty strong hint about what game series this is for. They also list the following as one of the pluses for the position: "A passion for games with a deep understanding of the Diablo franchise." The overview of the listing says: "Blizzard Entertainment, the developer of the most epic games in the world, is seeking an exceptionally skilled and passionate art director to help develop Blizzard’s next hit game!" Thanks GameInformer.com.