With the Apple HomeKit Experiment, you will be able to integrate the devices which are connected to Homey with Apple HomeKit.
Note: this feature is part of Homey Experiments. We cannot give support on experiments so use them at your own risk.
You can enable or disable this experiment via More (...) → Settings → Experiments.
Once enabled, your devices will show up in Apple HomeKit, and you will be able to control your Homey-connected devices via the Apple Home app and Siri.