IOS update with its new features -Siri and CarPlay updates, as well as "Find My AirPods" feature. IOS was announced in june with a Beta release in july, this first version of this update was in September 2016.
Find my AirPods a feature of this update, using the built-in app, owners of Apple's tiny, wireless earphones can view their current or last known location and play a sound on one or both of them to help locate the dinky devices.
Siri has a number of new features too, including support for paying and checking the status of bills with payment apps, ride app support for help with scheduling, and cricket scores, it also notifies whether a car is locked or not, checks the vehicle's fuel level and turn the lights on,this new update makes ur iPhone feel faster, the size of the update is just 655.3mb from the software update section in the device as seen below.