This is because Microsoft revealed at its Windows 10 event yesterday that it will be adding to its new console support for bitstream audio, including the premium Dolby Atmos format.
Ybarra also revealed that the original Xbox One will be getting the bitstream audio/Dolby Atmos update too.
As mentioned in the Update at the top of this article, while Microsoft hasn’t yet confirmed an exact date for when the bitstream audio update will be rolled out, we do now know it will be early 2017. Microsoft has also confirmed to me that the update will additionally provide support for the DTS-X object-based audio format.