I've updated my mac to Sequoia (MacOS 15) beta, my iPhone to iOS 18 beta, and Xcode to Xcode 16 beta.
Only then, I realized I couldn't publish app updates with Xcode beta (error in AppStore Connect). I tried using the non-beta Xcode version but got "Invalid Binary" during app review:
ITMS-90111: Unsupported SDK or Xcode version - App submissions must use the latest Xcode and SDK Release Candidates (RC). For details on currently supported versions, visit: https://developer.apple.com/news/releases.
I really need to publish updates and I can't wait for September. I can't downgrade my devices because that would require me to erase both my Mac and my iPhone (for testing), which is not something I can do.
Is there any option I didn't think about? How can I publish app updates in the current situation?
It really should be more explicit before updating that you can't release updates with the beta versions...