Oh yeah, and I'm running the Pro Display XDR through a USB-C 3.1 Gen 2 (10Gbps) cable. Plugging that into the VirtualLink port on an Nvidia RTX 20xx card is the easiest way to get the native 6K @ 60hz with 10bpc on Windows. These days you can get these cables at lengths up to 3 meters, which is nice. There's also this weird VR headset cable which works a treat if you need something longer or have a graphics card without the VirtualLink port: https://www.aliexpress.com/item/4001290509128.html

You need to use Brigadier to download the Boot Camp drivers to get the display brightness controls widget. Unfortunately, there isn't an option for Linux.