In an FAQ released for the Fallout 76 beta test, Bethesda has stated that the Xbox One community will get their hands on the beta first. It’s also not appearing on Steam.
The Fallout 76 beta access will be granted with a pre-order and PC gamers will purchase it through Bethesda.Net. The beta test will also begin on the Xbox One and some unspecified time after will come to the PC and other platforms. Hopefully, it won’t be some ridiculous amount of time like a month or more.
It’s disappointing that PC gamers will have to wait but there is obviously some exclusive timed deal in play. The fact that Steam won’t be an option may put some PC gamers off but if they really want it then it’s the Bethesda launcher or nothing,