iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Retail Roundup: Apple to Release 'Concierge' iPhone Application? Nashua, NH Store Opening?
There is no word yet on when the application, which will presumably be free to download, is expected to appear in the App Store.
On a separate note, MacRumors has also heard that Apple will be opening a new retail store this weekend in the Pheasant Lane Mall in Nashua, New Hampshire, the company's second location in the state. Like the existing Salem, NH store, the Nashua store is located only a short drive from the Boston metropolitan area and is expected to draw heavily from cross-border shoppers looking to take advantage of New Hampshire's lack of state sales taxes.