Apple's support document says the Pro Display XDR with the optional nano-texture glass can only be cleaned with a special Apple-provided cloth (Juli Clover/MacRumors)

Juli Clover / MacRumors:
Apple's support document says the Pro Display XDR with the optional nano-texture glass can only be cleaned with a special Apple-provided cloth  —  Apple's new Pro Display XDR comes with an optional nano-texture glass, which is etched at the nanometer level to cut down on reflectivity and glare for a matte look.

via Techmeme