The Philips Hue Bridge (046677458478) is now Matter-certified… and presumably most downstream Hue accessories, like bulbs and motion detectors, will benefit.
As to when we consumers gain these capabilities, that remains unknown. Although filing paperwork indicates the bridge requires firmware version 65536 or higher (and that number doesn’t map in an obvious way to the software version listed in my Hue app). Presumably a corresponding app update will also be required for management.
Despite the jargon (Thread, controller, border router, oh my!), Matter’s goal is to increase interoperability, reduce friction in the smart home. tbd if and when that happens, but if you’re unfamiliar go check out Verge’s Matter explainer of the new standard.