Best answer: No, the Xbox Series X won't have Bluetooth. The controllers do, however, with compatibility for PCs and mobile devices.

No Bluetooth for Xbox Series X

The Xbox Series X won't have Bluetooth, similarly to the Xbox One, Xbox One S, and Xbox One X. The reason is simple; the Bluetooth signal isn't strong enough to meet Microsoft's specifications for latency. Microsoft uses its proprietary signal, dubbed Xbox Wireless, for connecting controllers and other accessories, like the Turtle Beach Stealth 600 and the SteelSeries 9X wireless headsets.

Microsoft's signal is far stronger than Bluetooth, and since many people typically game while sitting far away from their consoles in the living room or so on, Bluetooth's susceptibility to interference increases exponentially at longer ranges.

If you were hoping you could use a USB Bluetooth adapter, it likely wouldn't work either, as the Xbox Series X and other Xbox One consoles don't have the drivers necessary to power them.

Bluetooth for controller connections to PC and phones