Update :

Kotaku
Update: Looks like the Bloodhunt classification may be related to a hunting game in the Cabela's series, unlikely to be connected to the Murder Your Maker title.
At last year's Spike TV VGAs, Activision debuted the newest entry in its True Crime series from United Front Games
GameInformer
My first guess as to what game this is teasing is Hitman, but our web savvy reader HK-47 says that the site is owned by Activision. So, I guess that means it's Prototype 2...or perhaps a bold new direction for the Tony Hawk franchise? We'll find out on December 11.