Xbox One supports 3D and 4K
xbox 4k

Director of Programming for Xbox Live Larry Hyrb aka Major Nelson has reveled that the Xbox One will support both 3D and 4K resolution in a Yahoo live chat with users. However he has not confirmed if 3D and 4K will be for movies and/or gaming. However he has not confirmed if 3D and 4K will be for movies and/or gaming.

Source: Yahoo