Apple today seeded the third betas of what would become maintenance and bug-fix updates to macOS Sierra, watchOS and tvOS. Members of the Apple Developer Program can now deploy macOS Sierra 10.12.5 beta 3 (build 16F60a), watchOS 3.2.2 beta 3 (build 14V5480a) and tvOS 10.2.1 beta 3 (build 14W5578b) through the Software Update mechanism.
macOS Sierra 10.12.5 beta 3 can be deployed through Mac App Store’s Updates tab.
On your fourth-generation Apple TV set-top box, tvOS 10.3.2 beta 3 can be installed in Settings → System → Software Updates → Update Software.
On your Apple Watch, watchOS 3.2.2 beta 3 can be deployed in the Watch app on your iPhone by tapping My Watch → General → Software Update.
Installing the betas over the air requires an appropriate configuration profile that can be downloaded and installed on your devices through Apple’s portal for developers.
If you’ve enrolled in the Apple Beta Software Program, you can test-drive macOS betas on your own devices without being a registered Apple developer.
We will update this post when we come across any new features or changes. If you end up finding something new in the meanwhile, drop a comment and let us know.