Kotaku has heard from "multiple sources close to the project" that Microsoft's next Xbox console (what we've been calling the Xbox 720) will be code-named "Durango".
By far the least entertaining of the rumors we've heard surrounding the Xbox 720, this could be the most informative if true. You see, the Xbox "Durango" won't be the finished product name, but it will be the name you will hear most often during the console's final development phase - the time when Microsoft announces the console until it ships.Also expected is that the Durango will have strong voice and motion controls like the Xbox 360 Kinect, and it will have a much stronger approach to 3D content. Some also predict it will allow players to play online games for free, and employ a premium service similar to Sony's Playstation Plus.
Durango doesn't necessarily mean anything as far as the system is concerned. It's just a name. Microsoft's Xbox Kinect was code-named Project Natal before being named "Kinect".
Source:Gamezone