https://wccftech.com/new-pubg-xbox-one-update-pts/

Bluehole and Microsoft have rolled out a new PUBG Xbox One update on the game’s test server prior to the game’s live update next week.

As reported earlier, this update is the final test build before the changes and improvements are implemented on the live servers. Aside from various performance improvements, next week’s live update will enable the Miramar desert map for Xbox One players.