The iOS and iPadOS 16.5 betas are part of Apple’s ongoing testing program for its operating systems, and the third releases are now available.
AppleInsider and Apple strongly suggest users don’t install beta operating systems or other beta software on “mission-critical” or primary devices, as there is the small chance of issues that could result in the loss of data. Testers should instead use thirdary or non-essential hardware and ensure they have sufficient backups of their critical data at all times.