If you're a tester of Apple's beta software, it's once again time to check for updates, as the firm has released iOS 9.3.2, OS X 10.11.5, and tvOS 9.2.1 beta 4.
Both the iOS and the OS X betas are available to developers and public beta testers alike. As there is no public beta program for tvOS, that seed is reserved for developers.
In case you've had you're eye out for a new watchOS 2.2.1 beta, you're out of luck, as the last build was beta 2, released 13 days ago. The timing isn't particularly surprising, as Apple betas tend to ship every two weeks; however, the iOS, OS X, and tvOS builds have been shipping a bit more frequently.
There are no new front-facing features in these updates, and being the fourth iteration, there is even less of note in these new builds. The iOS 9.3.2 beta 4 release notes cite the same known issues that we saw in beta 3 (and long before that), which is that the Simulator won't sync with iCloud Photo Library and that a user updating to an iOS 9 GM build might see duplicate dictionaries.
The release notes for the new tvOS build specifically says that there are no known issues, just like it did in the last one. The new OS X beta brings the build number to 15F31a, but as per usual, nothing is noted about fixes or known issues.
Source: Apple Developer