https://www.theverge.com/2017/9/19/16333344/apple-ios-11-iphone-ipad-download-available-now

Today, Apple pushed out the final version of iOS 11, its latest mobile operating system release. Most iPhone and iPad units made in the last few years should be capable of downloading it now if you head over to the Settings panel and check for a software update under the General tab. For those who have been part of either the developer or public beta process, you’ll likely already have the finalized iOS 11 and shouldn’t need to do anything.

iOS 11, first unveiled in detail back at Apple’s WWDC in June, is the same incremental annual refresh we’ve come to expect from the company, but it hides some impressive complexity under the surface. Not only does it add some neat features to iOS for the first time, like ARKit capabilities for augmented reality and a new Files app, but it also comes with much-needed improvements to Siri; screenshot capture and editing; and the Control Center, which is now more fully featured and customizable.