It's likely that there will be another Call of Duty game this year, and it's a safe bet to assume it won't be Modern Warfare 4. (Not yet, anyway!) So what could Activision be working on? Well, history has taught us that it should be developer Treyarch's turn to churn out this year's iteration of Call of Duty--and what exactly could they be working on?

They could be working on a sequel to Black Ops, 2010's entry which took the franchise to the Vietnam War. A new report reveals that Activision has managed to acquire the blackops2.com domain, and has transferred it to a brand protection company.

Fusible (via Joystiq) notes that Activision had previously purchased a number of Black Ops-related domains last year, including blackops6.com. However, blackops2.com was only recently acquired.

While the domain registrations could be protective (Activision had a very public fight to reacquire a Modern Warfare 3 URL which was used to promote EA's competing Battlefield 3), Activision decided to shell out money for the domain now, instead of months earlier. The transfer of the domain to MarkMonitor, an internet brand protection company, may also suggest Activision is eager to use the domain for marketing purposes.

Black Ops is one of the most popular games of all time. It was the top-played game on Xbox Live throughout 2011, and its Zombies mode has proven to be quite popular.