iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple Event Confirmed for September 9th: 'Let's Rock'
Engadget confirms that there is an Apple media event for September 9th as rumored.
Apple is expected to release new iPod nanos and a new iPod Touch. While Macbook and MacBook Pro updates are also in the pipeline, we have heard suggestions that those will not see updates until at least October.