I own an RX 6800XT running on an MSI x570 motherboard and AMD Ryzen 3900X.
Windows 11 Preview Radeon drivers work well, however the Radeon Software component does not work or start up. I can install the Windows 10 software, however it is eventually disabled since Windows 11 then installs its own driver.
I understand AMD is vigilant and hard at work with drivers, I however feel that AMD should not wait until December to release software compatible with Windows 11. More and more people are opting to upgrade to Windows 11 (BTW, very stable), especially being a free upgrade.
Just my 2 cents.