World of Warcraft and Diablo studio Blizzard Entertainment has registered a new domain name related to a mystery endeavor called "Project Blackstone." The November 26 registration was spotted by Fusible, and currently does not resolve to a Web page.

Blizzard Entertainment is currently working on a next-generation massively multiplayer online game in development under the codename "Titan." It is not clear if "Project Blackstone" is a new name for "Titan" or if it is something entirely new.

A Blizzard Entertainment representative was not immediately available to comment.

Blizzard Entertainment recently marked the eighth anniversary of World of Warcraft with a special video and offer. The game currently boasts 10 million subscribers paying $15 per month to traverse Azeroth.

The Irvine, California-based company cut 600 jobs earlier this year, with 10 percent of those affected actively involved in game development.