seen a few gaming news outlets saying it might be leaving but can confirm at least on my end it is listed in the leaving soon section, the game has been on gamepass for quite some time now so if you have as yet not had a chance to play it now would not be an ideal time with its imminent removal pending
Check out Subnautica on Xbox Game Pass!
https://www.microsoft.com/store/productId/BX3S1Q5DVHRD
