Microsoft classifies the checkerboard rendering and dynamic resolution scaling as true 4k
(N4G Xbox)

Microsoft has finally officially revealed Xbox One X, they showed off the console and official specs. They showed some games and we dont know whether all those games going to be native 4k games. However, Microsoft promises as the true 4k resolution. What is True 4k Resolution? Is it Native resolution? Interestingly enough on Xbox.com ( https://news.xbox.com/2017/06/11/new-packaging-icons-xbox/) Microsoft states that a 4K ultra HD game has a 2160p frame buffer output, that includes Native 4K, Checkerboarding, and Dynamic Resolution.