Does anyone know where I can get the full iOS 15.4 release notes? I can find the developer release notes, security updates, and a summary of new features. I am wondering if there's a page that gives a more detailed overview of the changes though.
See if this helps: https://support.apple.com/en-us/HT212788
See if this helps: https://support.apple.com/en-us/HT212788
To my knowledge the summary document that you looked at is the most that you will get from Apple. There are other sites that will provide more explanation on the Internet. MacRumors is one of them.
iOS 15.4 release notes
