
On Monday, Apple shipped out iOS 9.3 beta 6 to developers alongside watchOS 2.2 beta 6. The latest update adds stability and bug fixes to the beta firmware, just before its imminent public release.
Enabling Night Shift mode changes the amount of blue light emitting from a device at a given time. Studies have show that blue light can disrupt a person's sleep and circadian rhythm.
iOS 9.3 can now be updated by developers and public testers running a previous beta, via Over The Air update.