Apple has released the first beta of iOS and iPadOS 13.1 to the developers

General
Known Issues
Snapshots for apps that use Metal might have an unexpected appearance in the App Switcher. (53121694)

Deprecations
The UIApplicationExitsOnSuspend key is no longer supported in iOS & iPadOS 13. Update your apps to handle modern multitasking. (43958234)

Release notes
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