Chris AdamsonSo, this is a thing if you want to defend against the cellular network getting crappy on you.
https://developer.apple.com/documentation/wirelessinsights
https://developer.apple.com/documentation/wirelessinsights
This is also a thing, but only in the EU. https://developer.apple.com/documentation/telephonymessagingkit
Another thing. If your app talks directly to Wi-Fi hotspots, you can (please do) move that into an app extension for better privacy and performance. https://developer.apple.com/documentation/networkextension/hotspot-helper#Hotspot-helper-extension
Yet more things. If you're filtering web content, now you can filter against an entire URL, using an on-device Bloom filter to make filtering fast. There's a sample code project for this one. https://developer.apple.com/documentation/networkextension/url-filters
A thing that soft-launched a few months ago, but is officially making its debut now: exporting and importing credentials like passkeys: https://developer.apple.com/documentation/authenticationservices/ascredentialexportmanager
Things while we're speaking about passkeys: if your app knows that someone added/updated/deleted a credential, now you can tell all the credential managers on the system. https://developer.apple.com/documentation/authenticationservices/ascredentialupdater
Foundation things for which docs are still in the works: NotificationCenter is now concurrency-friendly with a new "Messages" type. Lots of notifications in Foundation, UIKit, and AppKit are now available with this approach. Also in Foundation, there's a "#bundle" macro that's way nicer than doing Bundle(MyClass.self)… or god forbid, a hard-coded bundle identifier. https://developer.apple.com/documentation/updates/foundation
Trying to remember other things… oh, this one is nice. If you're a FileProvider, you can now expose your cloud files to search. https://developer.apple.com/documentation/fileprovider/nsfileprovidersearching
