iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
MacBook Pro Display Component Shortages Strangling Supply?
Some high-volume Apple dealers tell AppleInsider that thousand of units have remained on backorder since early June, while others claim they've yet to receive a single shipment of the new notebooks. In speaking to these dealers, Apple representatives have reportedly identified the new 15-inch LED backlit display panels as the root of the problem.
Apple has not specified whether quality-assurance related yield issues are to blame, or rather it is simply a case of production not being fully ramped up for a relatively new technology.
Currently, Apple's U.S. Online Store cites a 7-10 day ship time for 15" base configurations.