https://www.gamespot.com/articles/xbox-one-beta-for-dayz-devs-new-survival-shooter-v/1100-6460500/

Bohemia Games, the developer of Arma and DayZ, has kicked off a beta for its new Xbox One shooter, Vigor. Members of the Xbox Insider program have their first opportunity to try out the upcoming survival game, which is slated to launch exclusively for Microsoft's console early next year.

To participate in the Vigor beta, launch the Xbox Insider hub on your console and navigate to the Insider content option to locate the beta. After selecting "join," you'll be automatically taken to a page on the Microsoft Store where you'll be able to download the beta client.