Apple has seeded new developer betas today for all of its major platforms, including iOS 9.3.2, OS X 10.11.5, tvOS 9.2.1, and watchOS 2.2.1. This comes six days after Apple released iOS 9.3.1 and 16 days after the firm released the last minor updates to these operating systems.
As the x.x.1 version numbers would indicate, there are no major changes in these builds. Of course, OS X version numbers can be ambiguous, as an x.x.1 increment could mean a minor change or it could mean a bug fix change.
The iOS 9.3.2 release notes call out known issues in Dictionary, iBooks, Safari, and Simulator. The OS X 10.11.5 release notes don't call out anything at all, which is actually pretty normal for OS X.
The watchOS 2.2.1 notes specify an issue that's been seen in the notes from earlier betas, which is that "watchOS 1 apps install and begin to launch, but fail to attach". Finally, tvOS known issues include Apple Configurator and Dictation.
Source: Apple Developer