Apple has released its fourth developer beta of Mac OS X 10.11.4. The new beta seems to be a maintenance upgrade. Previous betas have added support for Live Photos in iMessages and the ability to encrypt individual items in Notes.
Apple has also released the fourth beta of iOS 9.3. The upcoming version of the mobile operating system adds: new features for the Health, Wallet, Notes, and Settings apps; the ability for students to share iPads; an enhanced Managed Apple ID function; and new 3D Touch shortcuts. It also adds a new feature called Night Shift, which is is designed to cut down on the amount of blue light an iOS device is putting out during the evening hours.
The fourth beta of tv OS X 9.2 and watchOS 2.2 are also available. The tvOS 9.2 beta adds support for pairing Bluetooth keyboards, Folders organization for home screen apps a new App Switcher user interface, more Siri dialects, a native Apple Podcasts app. The watchOS 2.2 beta, in conjunction with the new tvOS beta, lets you pair multiple Apple Watches to a single iPhone.
Developers can download the new betas at the OS X Developer portal (https://developer.apple.com/osx/download/).