Apple has released new beta builds for each of their operating systems, including iOS 9.3 beta 4, OS X 10.11.4 beta 4, tvOS 9.2 beta 4, and watchOS 2.2 beta 4.
The new betas are available now for users participating in the developer beta testing programs, while public beta versions typically follow soon after. Users can download the available updates from the Apple Developer Center website, or through the over-the-air update mechanism on devices running prior beta releases.
iOS 9.3 beta 4 arrives as build 13E5214d and includes support for password protected Notes, Verizon wi-fi calling, and the Night Shift feature which changes screen color depending on the time of day (much like F.lux).
OS X 10.11.4 beta 4 is build 15E49a, and includes compatibility with iOS 9.3 devices, plus support for the secured Notes feature, and Messages app can now display Live Photos taken from an iPhone.
tvOS 9.2 beta 4 for Apple TV 4th generation models includes Bluetooth keyboard support, spoken dictation support for text input, iCloud Photo Library, and a variety of other improvements.
WatchOS 2.2 beta 4 resolves a fair amount of bugs and includes an updated Maps application.
The final version of each operating system release is expected to arrive on or near March 15, when Apple is apparently going to host an event to unveil an updated iPad and a revised 4″ iPhone.