diff --git a/src/ImageIO/CGImageDestination.cs b/src/ImageIO/CGImageDestination.cs
index ee76b3c0bc4c..39a1edb738df 100644
--- a/src/ImageIO/CGImageDestination.cs
+++ b/src/ImageIO/CGImageDestination.cs
@@ -188,6 +188,31 @@ internal NSMutableDictionary ToDictionary ()
 	}
 #endif
 
+	[Watch (4,0), TV (11,0), Mac (10,13), iOS (11,0)]
+	public partial class CGImageAuxiliaryDataInfo {
+		public NSData DepthData { get; set; }
+
+		public NSDictionary DepthDataDescription { get; set; }
+
+		public CGImageMetadata Metadata { get; set; }
+
+		internal NSMutableDictionary ToDictionary ()
+		{
+			var dict = new NSMutableDictionary ();
+
+			if (Metadata != null)
+				dict.LowlevelSetObject (Metadata.Handle, kMetadata);
+
+			if (DepthDataDescription != null)
+				dict.LowlevelSetObject (DepthDataDescription.Handle, DataDescription);
+
+			if (DepthData != null)
+				dict.LowlevelSetObject (DepthDataDescription.Handle, Data);
+
+			return dict;
+		}
+	}
+
 	public class CGImageDestination : INativeObject, IDisposable {
 		internal IntPtr handle;
 
@@ -470,5 +495,17 @@ public bool CopyImageSource (CGImageSource image, CGImageDestinationOptions opti
 					o.Dispose ();
 			}
 		}
+
+		[Watch (4, 0), TV (11, 0), Mac (10, 13), iOS (11, 0)]
+		[DllImport (Constants.ImageIOLibrary)]
+		static extern void CGImageDestinationAddAuxiliaryDataInfo (IntPtr /* CGImageDestinationRef* */ idst, IntPtr /* CFStringRef* */ auxiliaryImageDataType, IntPtr /* CFDictionaryRef* */ auxiliaryDataInfoDictionary);
+
+		[Watch (4, 0), TV (11, 0), Mac (10, 13), iOS (11, 0)]
+		public void AddAuxiliaryDataInfo (CGImageDestination dest, CGImageAuxiliaryDataType auxiliaryImageDataType, CGImageAuxiliaryDataInfo auxiliaryDataInfo)
+		{
+			using (var dict = auxiliaryDataInfo?.ToDictionary ()) {
+				CGImageDestinationAddAuxiliaryDataInfo (dest.GetHandle (), auxiliaryImageDataType.GetConstant ().GetHandle (), dict.GetHandle ());
+			}
+		}
 	}
-}
+}
\ No newline at end of file
diff --git a/src/ImageIO/CGImageSource.cs b/src/ImageIO/CGImageSource.cs
index d782b38dc83d..290cc5e0285c 100644
--- a/src/ImageIO/CGImageSource.cs
+++ b/src/ImageIO/CGImageSource.cs
@@ -376,5 +376,44 @@ public CGImageSourceStatus GetStatus (int index)
 		{
 			return CGImageSourceGetStatusAtIndex (handle, index);
 		}
+
+		[Watch (4, 0), TV (11, 0), Mac (10, 13), iOS (11, 0)]
+		[DllImport (Constants.ImageIOLibrary)]
+		static extern IntPtr /* CFDictionaryRef* */ CGImageSourceCopyAuxiliaryDataInfoAtIndex (IntPtr /* CGImageSourceRef* */ isrc, nuint index, IntPtr /* CFStringRef* */ auxiliaryImageDataType);
+
+		[Watch (4, 0), TV (11, 0), Mac (10, 13), iOS (11, 0)]
+		public CGImageAuxiliaryDataInfo CopyAuxiliaryDataInfo (CGImageSource imageSource, nuint index, CGImageAuxiliaryDataType auxiliaryImageDataType)
+		{
+			var ptr = CGImageSourceCopyAuxiliaryDataInfoAtIndex (imageSource.GetHandle (), index, auxiliaryImageDataType.GetConstant ().GetHandle ());
+			if (ptr == IntPtr.Zero)
+				return null;
+
+			var info = new CGImageAuxiliaryDataInfo ();
+
+			using (var dictionary = Runtime.GetNSObject<NSDictionary> (ptr)) {
+				bool success;
+
+				NSData data;
+				success = dictionary.TryGetValue<NSData> (new NSString (CGImageAuxiliaryDataInfo.Data), out data);
+
+				if (success)
+					info.DepthData = data;
+
+				NSDictionary dict;
+				success = dictionary.TryGetValue<NSDictionary> (new NSString (CGImageAuxiliaryDataInfo.DataDescription), out dict);
+
+				if (success)
+					info.DepthDataDescription = dict;
+
+				CGImageMetadata metadata;
+				success = dictionary.TryGetValue<CGImageMetadata> (new NSString (CGImageAuxiliaryDataInfo.kMetadata), out metadata);
+
+				if (success)
+					info.Metadata = metadata;
+			}
+
+			return info;
+
+		}
 	}
 }
diff --git a/src/imageio.cs b/src/imageio.cs
index 6f4ee0134ede..5b0ffb2be6ed 100644
--- a/src/imageio.cs
+++ b/src/imageio.cs
@@ -857,6 +857,50 @@ interface CGImageProperties {
 		[Field ("kCGImagePropertyMakerAppleDictionary")]
 		NSString MakerAppleDictionary { get; }
 #endif
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyImageCount")]
+		NSString ImageCount { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyWidth")]
+		NSString Width { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyHeight")]
+		NSString Height { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyBytesPerRow")]
+		NSString BytesPerRow { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyNamedColorSpace")]
+		NSString NamedColorSpace { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyPixelFormat")]
+		NSString PixelFormat { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyImages")]
+		NSString Images { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyThumbnailImages")]
+		NSString ThumbnailImages { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyAuxiliaryData")]
+		NSString AuxiliaryData { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyAuxiliaryDataType")]
+		NSString AuxiliaryDataType { get; }
+
+		[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+		[Field ("kCGImagePropertyFileContentsDictionary")]
+		NSString FileContentsDictionary { get; }
 	}
 
 	[Since (7,0), MountainLion]
@@ -1169,4 +1213,26 @@ interface CGCopyImageSourceOptions {
 		IntPtr kOrientation { get; }
 	}
 #endif
+
+	[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+	enum CGImageAuxiliaryDataType {
+		[Field ("kCGImageAuxiliaryDataTypeDepth")]
+		Depth,
+
+		[Field ("kCGImageAuxiliaryDataTypeDisparity")]
+		Disparity,
+	}
+
+	[Partial]
+	[Mac (10, 13), iOS (11,0), TV (11,0), Watch (4,0)]
+	interface CGImageAuxiliaryDataInfo {
+		[Internal, Field ("kCGImageAuxiliaryDataInfoData")]
+		IntPtr Data { get; }
+
+		[Internal, Field ("kCGImageAuxiliaryDataInfoDataDescription")]
+		IntPtr DataDescription { get; }
+
+		[Internal, Field ("kCGImageAuxiliaryDataInfoMetadata")]
+		IntPtr kMetadata { get; }
+	}
 }