I'm stuck.
I'm trying to install the beta of macOS 27 (Golden Gate) for testing. I have:
- Created a new APFS volume
- Installed a fresh copy of macOS 26.7
- Booted new volume, created an account, and logged in using my developer account
- Followed the instructions for "Installing and using Apple Beta Software" (<https://developer.apple.com/support/install-beta/#macos-beta>), specifically
- Opened System Settings > General > Software Updates
- Clicked on Beta Updates (i) button
But the only options it gives me are "Off" and "macOS 26 Developer Betas".
There is no place to select "macOS 27 beta"
It shows my developer account in the beta updates window. I've confirmed that my account is up-to-date.
There's obviously some step I'm missing, but I don't know what.