I’ve got the update on my iPhone 12 Mini. Here’s the full patch notes; they’re short.

This update provides bug fixes and important security updates for iPhone 15 and iPhone 15 Pro models.

For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222

We’re not seeing the update on our iPhone 15 review devices just yet, but we’re planning to install it on those as soon as we can. Hopefully the patch fixes the seemingly-broken battery charging setting that’s supposed to halt charging past 80 percent.