I've learned that Microsoft has released support for accessing GPUs in WSL2 environment, which requires a special graphics driver here. But that driver seems not supporting my 6700XT. Is there any plan on that?
WSL2 depends on the OS and not the GPU driver as far as I am aware.
This Windows Tech site gives good instructions on how to enable WSL & WSL2 in Windows 10: https://www.windowscentral.com/how-install-wsl2-windows-10
I enabled WSL first in my Windows 10 using a GTX1070 GPU card and then afterwards updated to WSL2 using the above link's instructions.
I then was able to install Ubuntu App on my computer to run Linux programs.