Here’s the apple change-log, to save you a click:

Stolen Device Protection

Stolen Device Protection increases security of iPhone and Apple ID by requiring Face ID or Touch ID with no passcode fallback to perform certain actions.

Security Delay requires Face ID or Touch ID, an hour wait, and then an additional successful biometric authentication before sensitive operations like changing device passcode or Apple ID password can be performed.

Lock Screen

New Unity wallpaper honors Black history and culture in celebration of Black History Month.

Music

Collaborate on playlists allows you to invite friends to join your playlist and everyone can add, reorder, and remove songs.

Emoji reactions can be added to any track in a collaborative playlist.

This update also includes the following improvements:

AirPlay hotel support lets you stream content directly to the TV in your room in select hotels.

AppleCare & Warranty in Settings shows your coverage for all devices signed in with your Apple ID.

Crash detection optimizations (all iPhone 14 and iPhone 15 models).

It would be good if you could view your significant locations to get an idea of how stolen device protection might work. Apparently I have 103 significant locations but I can only see the most recent 3, none of which are my home despite the fact I’m there right now. I can’t think of 103 places where I wouldn’t want the feature to be active, the only place I wouldn’t want it on is at home and I can’t tell if that’s going to be included anyway!