Studios owned by Microsoft are no longer developing for Xbox One, instead focusing on current-gen only.
In an interview with Axios, head of Microsoft studios Matt Booty said: "We've moved on to Gen 9," referring to the Xbox Series X and S.
He confirmed that none of Xbox's studios are currently working on games for the previous generation, outside of support for ongoing titles such as Minecraft.
source https://www.gamesindustry.biz/microsoft-studios-no-longer-developing-for-xbox-one