Amazon.com: Ark: Ultimate Survivor Edition - For Xbox Series X : Video Games
Buy ARK: Ultimate Survivor Edition | Xbox
Ark: Survival Evolved Xbox One Getting Two-Player Local Split-Screen - GameSpot
Buy ARK: Survival Evolved | Xbox
It's obvs not out yet but if anybody wants to install ASA on Xbox so it's fully updated before they decide to purchase it, you can pre-install from the Xbox app now :