Following up on their partnership with Modern Warfare 2, Activision and Microsoft have announced a new agreement at E3 that will make Call of Duty DLC timed Xbox exclusives for at least the next three years, until 2012. Call of Duty: Black Ops DLC will be available first on Xbox Live, with PSN and PC releases likely to follow a few months afterwards. Considering the overwhelming demand for Modern Warfare 2 DLC, this is undoubtedly a win for Microsoft.