After testing it with registered developers and public beta testers, Apple today released the iOS 9.3 software update for the iPhone, iPod touch and iPad. A major new software update, iOS 9.3 is now available on all iOS 9-comptaible devices in Settings right General → Software Update and brings several headline new features along with a bunch of under-the-hood tweaks and enhancements.
Some of the big new features of iOS 9.3 include Night Shift Mode, passcode or Touch ID protection of your notes, enhancements in News and Health apps, as well as important enhancements for iOS in the classroom such as managed Apple IDs, multi-user support on iPads and more.