https://www.gamespot.com/articles/pubg-xbox-ones-new-map-miramar-out-now/1100-6459163/

After weeks of testing, Miramar is finally set to launch for the Xbox One version of PlayerUnknown's Battlegrounds. The new map will be added to the live game tomorrow, May 24, and it will arrive as part of PUBG's May update alongside some stability and optimization improvements. [Update: The May update has arrived, and Miramar is now available on PUBG's live servers on Xbox One.]

Miramar rolls out for all Xbox One players at 12 AM PT / 3 AM ET / 8 AM BST. It's the second map to be added to the console version of PUBG, following Erangel. In contrast to the lush greenery of the original map, Miramar is set in the desert and features arid locales likes mountains and villages to explore and fight in.