Apple has restarted the beta process once more with builds of iOS 13.3, iPadOS 13.3, tvOS 13.3, and watchOS 6.1.1 now available for testing by developers.
The latest builds can be acquired from the Apple Developer Center for participants in the Developer Beta program, as well as via the usual over-the-air update for hardware already used for testing beta software. Public beta versions of the developer builds are usually issued a short time after their developer counterparts, and can be downloaded from the Apple Beta Software Program site when made available.
Released after going through four beta cycles, iOS 13.2 and iPadOS 13.2 introduced Deep Fusion photography, Siri improvement program opt-in options, over 70 new emoji, HomeKits Secure Video, and a number of other improvements.
At present, it isn't clear what new features are arriving with the new beta versions.
Both AppleInsider and Apple strongly suggest users don't install beta software onto "mission-critical" or primary devices, due to the slim possibility for data loss or other issues. The recommendation instead is to install betas onto secondary or inessential devices, and to make sure there are sufficient backups of any important data before making major changes or updates.