https://www.pcgamer.com/xbox-one-is-getting-mouse-and-keyboard-support-next-month/

It's been promised for years, but Microsoft will finally start rolling out mouse and keyboard support for its Xbox One devices next month. Razer will be responsible for officially licensed Xbox mice and keyboards, even though "most wired or wireless USB keyboards and mice" will be supported.

Xbox Director of Program Management Jason Ronald made the announcement earlier today, and it's hard not to detect a defensive tone in his post. "With this new input support at the platform level, developers can now build mouse and keyboard support in their games if and how they choose," Ronald wrote (emphasis his).