Apple has some serious updates. So much so that you should install the update now! This is for Apple iOS 16 compatible devices, iPhone 8 and newer (as below).
The table below shows the recent updates and how they apply.
Here is a link to the release notes: https://support.apple.com/en-us/HT213407#1612.
Apple’s iOS 16.3.1 security page discloses that the update contains just two security patches – but very serious ones.
Apple security updates
|Name and information link||Available for||Release date|
|macOS Big Sur 11.7.4
This update has no published CVE entries.
|macOS Big Sur||15 Feb 2023|
|Safari 16.3||macOS Big Sur and macOS Monterey||13 Feb 2023|
|iOS 16.3.1 and iPadOS 16.3.1||iPhone 8 and later, iPad Pro (all models), iPad Air 3rd generation and later, iPad 5th generation and later, and iPad mini 5th generation and later||13 Feb 2023|
|macOS 13.2.1||macOS Ventura||13 Feb 2023|
|tvOS 16.3.2 (details available soon)||Apple TV 4K (all models) and Apple TV HD||13 Feb 2023|
|watchOS 9.3.1 (details available soon)||Apple Watch Series 4 and later||13 Feb 2023|
For a good report, read this: Apple iOS 16.3.1 Release: Should You Upgrade? (forbes.com)