AVSystemRouting iOS xcode27.0 b4

#AVSystemRouting.framework

diff -ruN /Applications/Xcode_27.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/AVSystemRouting.framework/Headers/AVSystemRoute.h /Applications/Xcode_27.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/AVSystemRouting.framework/Headers/AVSystemRoute.h
--- /Applications/Xcode_27.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/AVSystemRouting.framework/Headers/AVSystemRoute.h	2026-06-30 00:59:47
+++ /Applications/Xcode_27.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/AVSystemRouting.framework/Headers/AVSystemRoute.h	2026-07-11 08:05:48
@@ -278,6 +278,10 @@
 /// The playback control interface for the remote session.
 ///
 /// This property is always non-nil when obtained from a successful call to ``AVSystemRouteSession/start()``.
+///
+/// - Important: Always update media playback state information regularly in the playbackControl object to ensure
+///              the system displays accurate information about the current media play state across a person's
+///              devices and in system UI.
 @property (readonly, nullable) NSObject<AVPlaybackUserInterfaceControllable> *playbackControl;
 
 /// The data channel for sending and receiving data with the remote application.