AppKit macOS xcode26.1 b1

#AppKit.framework

diff -ruN /Applications/Xcode_26.0.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSAlert.h /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSAlert.h
--- /Applications/Xcode_26.0.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSAlert.h	2025-08-26 23:45:52
+++ /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSAlert.h	2025-09-17 03:20:13
@@ -77,8 +77,12 @@
 // MARK: - Accessing a Custom Alert Icon
 
 /// The custom icon displayed in the alert.
-/// By default, the image used in an alert is the app icon (`NSApplicationIcon`). If this property’s value is set, the specified custom image is used in place of the app icon.
-/// If a custom alert icon had been set, it can be cleared by setting this property’s value to `nil`, which restores use of the app icon for the alert.
+///
+/// By default, the image used in an alert is the app icon. If you set this property’s value, your specified custom image is used in place of the app icon.
+///
+/// If you’ve set a custom alert icon, you can clear it by setting this property’s value to `nil`, which restores use of the app icon for the alert.
+///
+/// - Note: AppKit may omit the icon from the alert if it’s the app icon and the alert’s context is clear, such as being presented as a sheet on an app window.
 @property (null_resettable, strong) NSImage *icon;
 
 // MARK: - Accessing Alert Response Buttons
diff -ruN /Applications/Xcode_26.0.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSSavePanel.h /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSSavePanel.h
--- /Applications/Xcode_26.0.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSSavePanel.h	2025-08-26 23:45:49
+++ /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSSavePanel.h	2025-09-17 03:20:10
@@ -95,7 +95,6 @@
 
 /**
  `NSSavePanel`: Returns `YES` if the panel is expanded. Defaults to `NO`. Persists in the user defaults.
- - Note: Can only be set during the configuration phase.
  `NSOpenPanel`: Not used.
  */
 @property (getter=isExpanded, readonly) BOOL expanded;