Apple introduced a new HomeKit architecture this year with iOS 16.4. Apart from the fact that the iPad can no longer be used as a home hub, not much has changed in terms of handling the system. However, there is a big change in the interaction with Philips Hue. Pairing with HomeKit is now only possible if you use a home hub in the same network.
HomeKit connection from Philips Hue requires a home hub Nothing works without HomePod or Apple TV
Nothing works without HomePod or Apple TV