Dear @Jean_Christophe_BENO,
I would also like to see a native Roon-App for Windows ARM-Laptops!
As Windows has professional musicians and audio hardware in focus (see article here: Make Great Music with Windows on Arm - Windows MIDI and Music dev ), it looks like the acceptance in these areas is growing.
Also the support of additional/external USB-DACs for Headphone-use on ARM-Laptops should be considered. See my support-ticket: Audioquest USB-DAC not recognized on Snapdragon ARM-Laptop (ref#QJ6487)