One of the major changes in iOS11 is the addition of being able to scan documents into Notes. You could have used the camera to take photos but scanning is more accurate and contains more details . I discovered this by accident and only learnt about it when opening up Notes after the update.
What other gems have people found in iOS 11? Now there is a fix update 11.1 this morning. I had experienced some anomalies like screen freezes . And a few apps won’t work in iOS 11 which was a little frustrating when I was demonstrating yesterday