PUBG for Xbox One
For this weekend only, you can download and play PUBG for free on the Xbox One. to learn more about Full Product Release (1.0). Customers who purchased the game during Xbox Game Preview [prior to midnight UTC September 4, 2018] will receive the Full Product Release (1.0) update at no additional charge as an in-game update. Xbox Live Gold required to play (sold separately).

Just so we're clear here, because the wording on the product description is really odd, this is just a free weekend for PUBG. The weekend having obviously started a few days earlier than one would normally expect it to. It's the full game. You download it, you play it, and if you like it you can purchase the game to keep playing after this weekend is over.