Apple revised its macOS 12.3 beta release notes today to warn macOS Catalina customers of a possible boot loop issue when installing the macOS 12.3 or macOS 11.6.4 betas on a separate APFS drive with FileVault enabled.
“If your Mac is presently running macOS Catalina, installing macOS Monterey 12.3 beta or macOS Big Sur 11.6.4 beta on a disc with FileVault enabled may result in a boot loop when attempting to log back into the prior volume,” Apple warns.
It is possible to install macOS on a second APFS volume on a Mac running macOS High Sierra or later and then move between versions of macOS, including betas, as if they were on distinct discs. More information is available in an Apple support document. Also PS5 restock update: Track on Twitter, Best Buy, Target and Fast and Furious 10: Release date, new cast rumours