iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple Releases EFI Firmware Updates
The update describes various fixes including
- Improves performance and reliability of Intel Core 2 Duo Processors (iMac, MacBook, MacBook Pro)
- Improves performance and reliability of Dual-Core Intel Xeon Procesors (Xserve)
- Fixes issues with Boot Camp (iMac, Mac Pro, MacBook, MacBook Pro)
- Fixes fan behavior (Mac Pro)