Notes

• What happened to launchOptions15 October 2026In an app that supports scenes, launchOptions is nil, and as of the iOS 27 SDK every app has to support scenes. Where each of the 14 launch options went, and the 14 connection options that took their place.
• Core Location has a maritime activity type, as of iOS 275 October 2026It arrived without a WWDC session or a release note. If your app is used on the water, it is the activity type to set.
• The default contactless app is woken by every reader22 September 2026Being the default NFC contactless app means any reader field wakes your app, not only the readers asking for the identifiers you declared. There is no filter, and there can only be one default.
• There is probably a logging profile for whatever you are stuck on22 September 2026Default log level hides the framework's own reasoning. Apple publishes a configuration profile per subsystem that turns it on, and it has to be installed before you reproduce the problem.