I somehow missed that my Hubitat Elevation now has HomeKit integration support natively. I've been using a HomeBridge plugin to get my Hubitat devices into Apple Home for years, but I would like to skip that.
However, when I click on the HomeKit Integration under "Apps", I just get:
Error 500
Something went wrong
If you are seeing this screen repeatedly, please visit support dot hubitat dot com.
I tried a soft reset (restart with the restore database option), and it had no effect.
There is possibly some confusion here. There are two separate "homekit" integrations with distinct purposes.
HomeKit bridge - this links Hubitat devices to Apple Home, and permits them to be controlled via the Apple Home app. This is the equivalent of HomeBridge that @iTim314 was referring to. HomeKit bridge is compatible with ALL Hubitat hubs.
HomeKit Controller - this permits Homekit devices to be paired directly with Hubitat, and controlled directly using Hubitat. This integration is limited to the C-8 Pro.