Apple has released the following betas to the developers:

Apple Seeds Fourth Beta of iOS 9.3 to Developers
Apple Seeds Fourth Beta of tvOS 9.2 to Developers
Apple Seeds Fourth Beta of WatchOS 2.2 to Developers
Apple Seeds Fourth OS X 10.11.4 El Capitan Beta to Developers

Apple Seeds Fourth Beta of iOS 9.3 to Developers

The fourth iOS 9.3 beta is available as an over-the-air update and through the iOS section of the Apple Developer Center.

As a major .1 update to the iOS 9 operating system, iOS 9.3 introduces several new features. There's a Night Shift mode to reduce the amount of blue light iOS users are exposed to in the evening by shifting the iPad or iPhone display to a warmer (yellower) color spectrum, and there are several features designed to improve the iPad for Education program, such as multi-user login. Multi-user login, while an appealing feature, is limited to MDM customers and is not available to the general public.

What's new in iOS 9.3 beta 4:
Night Shift - The Control Center icon for Night Shift has been redesigned. It's now a moon inside of a sun instead of a moon inside of an eye.

Read full article @ MacRumors

Apple Seeds Fourth Beta of tvOS 9.2 to Developers

tvOS 9.2 is a significant update for the tvOS operating system and new features have been added continually throughout the beta testing process. It brings support for Bluetooth keyboards, allowing a keyboard to be paired to the Apple TV for text entry. Bluetooth keyboard support is a major feature that was missing from previous versions of tvOS and its addition should make it much easier to do tasks like entering passwords on the fourth-generation Apple TV.

Read full article @ MacRumors

Apple Seeds Fourth Beta of WatchOS 2.2 to Developers

watchOS 2.2, along with iOS 9.3, introduces support for pairing multiple Apple Watches with a single iPhone. Both updates are required, with each watch running watchOS 2.2 and each iPhone running iOS 9.3. watchOS 2.2 also includes a revamped look for the built-in Maps app on the Apple Watch with access to the Nearby feature first introduced with iOS 9 and new buttons for quickly accessing directions to home and work.

Read full article @ MacRumors

Apple Seeds Fourth OS X 10.11.4 El Capitan Beta to Developers

OS X 10.11.4 offers a couple of new features, such as Live Photos support in Messages, the ability to password protect notes in the Notes app, and an option to import notes from Evernote, but like the recent OS X 10.11.3 update, it appears to focus primarily on under-the-hood bug fixes and performance improvements. Almost all of Apple's OS X updates to date have been smaller updates that improve performance rather than introduce new features.

Read full article @ MacRumors