Next week, in the Xbox One alpha release ring, Microsoft will enable AMD FreeSync 2 for the Xbox One S and the Xbox One X. This allows compatible displays, ones that accept FreeSync variable refresh rate signals over HDMI, to time their refresh rate to the console’s rendering rate and removes the micro-stutter that could be seen due to this mismatch.
Because it is FreeSync 2, it will also work with HDR content.
As stated, FreeSync over HDMI will be required to use this feature, which has two caveats. The first is that DisplayPort will not work, so that’s something to be careful about if you’re planning to buy something (either a display or an Xbox itself) for this feature. The second is that, as far as I know, not a single TV currently supports FreeSync – but that could change. There is now a major console manufacturer pushing the standard, which is a stronger use case than “maybe someone with an AMD (or potentially Intel someday) GPU will plug their PC into this TV”.
The menu to enable FreeSync on the Xbox One
The Xbox Insider Program Alpha Preview ring is invite only. It will then trickle to Beta, Delta, and Omega, before being released to the general public.