Apple seem to be doing this a lot these days - releasing a new iOS version without a compatible Xcode. Seems like it's best to wait until I see a new version of Xcode before I update any devices. Pfft.

I guess it's tied up with the recent general availability of Xcode Cloud?

Ah, I'm being an idiot - I needed to set my dev team in the Signings & Capabilities section - these stubs aren't in the Simulator version, as per the release notes 🤦‍♂️😏

Same here - any luck with this?