ImageIO macOS xcode9 beta3

#ImageIO.framework

diff -ruN /Applications/Xcode9-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageDestination.h /Applications/Xcode9-beta3.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageDestination.h
--- /Applications/Xcode9-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageDestination.h	2017-06-14 04:13:36.000000000 -0400
+++ /Applications/Xcode9-beta3.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageDestination.h	2017-06-30 02:07:36.000000000 -0400
@@ -46,7 +46,7 @@
 
 IMAGEIO_EXTERN const CFStringRef kCGImageDestinationImageMaxPixelSize  IMAGEIO_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0);
 
-/* Enable or disable JPEG thumbnail embedding.
+/* Enable or disable thumbnail embedding for JPEG and HEIF.
  * The value should be kCFBooleanTrue or kCFBooleanFalse. Defaults to kCFBooleanFalse */
 
 IMAGEIO_EXTERN const CFStringRef kCGImageDestinationEmbedThumbnail  IMAGEIO_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0);
diff -ruN /Applications/Xcode9-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageSource.h /Applications/Xcode9-beta3.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageSource.h
--- /Applications/Xcode9-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageSource.h	2017-06-12 01:02:15.000000000 -0400
+++ /Applications/Xcode9-beta3.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/ImageIO.framework/Headers/CGImageSource.h	2017-06-30 02:07:36.000000000 -0400
@@ -103,7 +103,7 @@
  * The resulting image will be smaller and have reduced spacial quality but will otherwise have the same characteristics
  * as the full size normal image.
  * If the specified scaling factor is not supported, a larger or full size normal image will be returned.
- * Supported file formats are JPEG, TIFF, and PNG.
+ * Supported file formats are JPEG, HEIF, TIFF, and PNG.
  * The value of this key must be an integer CFNumberRef (allowed values: 2, 4, and 8).
  */