A new release this week adds Stolen Devise Protection. Check Settings > Face ID & Passcode > Stolen Device Protection > ON. Because our iPhones are out-and-about with us, protecting your device is priority one.
General details on iOS 17 features are available as a PDF document.
Is this the time for a device check and tune-up? The iOS_device_details_ios16.pdf was revised August 2023 and with iOS 17 there could be changes. Right now it still fits on 2 pages but the type is getting smaller.