The Infamy is the first part of the Tyranny of King Washington which will come out in February.
The three episodes are available for owners of the Assassin’s Creed 3 Season Pass which costs 2400 MS Points or £23.99. The first part costs 800 MS Points or £9.99 as a stand-alone pack. It releases on February 19 for Xbox 360 and PC as well as on February 30 for PS3.