Apple recently released iOS 11.2, which allows you to send money to people using iMessage, enables faster wireless charging for iPhone X and 8 and fixes a date bug that was causing crashes on iOS 11.1.2. As with all iOS updates, we strongly suggest that you hold off on updating your devices until your aviation app and accessory developers have time to test compatibility with the new software.
Source: Ipad appsiOS Update Green Light program: iOS 11.2