This is the Greek based entry within the franchise and the Assassin's Creed: Odyssey Xbox One X Enhanced release is confirmed as the official tracking list on Xbox has it noted. The game is listed as being "in development" for an enhancement and that honestly isn't at all surprising since most Ubisoft games are supporting this feature. Furthermore, that Origins was also enhanced and heavily marketed for the platform by having one. For now we have basic details as it's "in-development" with mentions of 4k resolution and HDR being supported just like with Origins. There's also no current mention of support for VRR.
It will most likely be enhanced right upon regular launch on Xbox as opposed to post. For some basic details Odyssey is a direct follow-up to the last entry Origins being similar in design and theme. It takes place during a Greek period allowing players to be an assassin of either gender and work through a branching tale. Experience what it's like to be a Spartan in another release for the series taking players to a fresh historic time. Battle in epic ancient conflicts of war with massive armies of 150v150 which will bring insane moments. Face untamed environments and bustling cities when Assassin's Creed: Odyssey Xbox One X enhanced releases October 5, 2018.