According to the update's release notes, it's easier to add AppleCare+ coverage to your eligible devices using the Apple Support app. AppleCare+ provides extra coverage and replacement for accidental damage on iOS, Apple Watch, Mac, HomePod, and more.
Today's update also introduces a streamlined process for resetting your Apple ID password quickly and securely, and it offers up a number of unspecified bug and performance enhancements.
The Apple Support app can be downloaded from the App Store for free. [Direct Link]