I watched the session multiple times, but it just gives a high level overview that doesn't really say much about this very exciting and complex new feature. It only mentions actually talking to the driver in passing with a single sentence "apps use the IOKit framework to open user clients". Then the presenter says for an example of that we can check out "communicating between a driverkit extension and a client app", which is a macOS app that doesn't even use IOKit, and trying to import IOKit into an iPadOS target doesn't work anyway because the framework is not there.
Am I missing something, or is this simply not available in Xcode 14 seed 1? Release notes don't mention anything either, and docs are only updated to reflect that some of this stuff is now available on iPadOS 16...