IOS 9.3 will let you dim display’s blue light to help your brain shift towards sleep / Boing Boing https://boingboing.net/2016/01/11/ios-9-3-will-let-you-dim-displ.html
Source
https://twitter.com/danielmcclure/status/687252506854985728
https://twitter.com/danielmcclure/status/687252506854985728