What software update is this?

[Rafagon]

I activated my new iPhone 13 Pro Max earlier today. Why is it offering me a software update?

It shows I'm on iOS 15, yet there is an iOS update available.

It doesn't appear to have a new version number. It looks like it will still be iOS 15 after I update.

See screenshot below:

 

[Realityck]

I think that has to do with "this update provides important security updates and fixes an issue where widgets may revert to their default settings after restoring from a backup."

Its for new iPhone 13 owners

 

[Slartibart]

The official public release is a slightly newer build than the one delivered with the first batch of the iPhones 13.

 

[Cobold]

What is the build number of the version the iPhone 13 Series are currently shipped with?

The update mention should bring them to build 19A346.

 

[Ansath]

The update includes the Pegasus Exploit fix, as the iOS loaded on the 13’s before the exploit was reported to Apple & fixed