diff --git a/ExternalRevisions/VulkanSamples_repo_revision b/ExternalRevisions/VulkanSamples_repo_revision
index 909b4a8a..0facaac9 100644
--- a/ExternalRevisions/VulkanSamples_repo_revision
+++ b/ExternalRevisions/VulkanSamples_repo_revision
@@ -1 +1 @@
-2c05813aff7161f04250673e690e6c130cfae2d7
+4d56b6cb5ce0682bd3ade4bb20791c7bc16c3ce8
diff --git a/MoltenVK/MoltenVK/API/vk_mvk_moltenvk.h b/MoltenVK/MoltenVK/API/vk_mvk_moltenvk.h
index 7eea74c0..d9a8bc9e 100644
--- a/MoltenVK/MoltenVK/API/vk_mvk_moltenvk.h
+++ b/MoltenVK/MoltenVK/API/vk_mvk_moltenvk.h
@@ -48,7 +48,7 @@ extern "C" {
  */
 #define MVK_VERSION_MAJOR   1
 #define MVK_VERSION_MINOR   0
-#define MVK_VERSION_PATCH   2
+#define MVK_VERSION_PATCH   3
 
 #define MVK_MAKE_VERSION(major, minor, patch)    (((major) * 10000) + ((minor) * 100) + (patch))
 #define MVK_VERSION     MVK_MAKE_VERSION(MVK_VERSION_MAJOR, MVK_VERSION_MINOR, MVK_VERSION_PATCH)
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 9109dc13..6dd5139d 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -229,12 +229,16 @@ VkResult MVKPhysicalDevice::getSurfacePresentModes(MVKSurface* surface,
 	CAMetalLayer* mtlLayer = surface->getCAMetalLayer();
 	if ( !mtlLayer ) { return surface->getConfigurationResult(); }
 
-	// TODO: check which mode(s) are applicable to Metal
-	const VkPresentModeKHR presentModes[] = {
-//		VK_PRESENT_MODE_MAILBOX_KHR,
-		VK_PRESENT_MODE_FIFO_KHR,
-	};
-	const uint presentModesCnt = sizeof(presentModes) / sizeof(VkPresentModeKHR);
+	vector<VkPresentModeKHR> presentModes;
+	presentModes.push_back(VK_PRESENT_MODE_FIFO_KHR);
+
+#if MVK_MACOS
+	if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v3] ) {
+		presentModes.push_back(VK_PRESENT_MODE_IMMEDIATE_KHR);
+	}
+#endif
+
+	uint32_t presentModesCnt = uint32_t(presentModes.size());
 
 	// If properties aren't actually being requested yet, simply update the returned count
 	if ( !pPresentModes ) {
@@ -947,9 +951,9 @@ void MVKPhysicalDevice::logGPUInfo() {
 #endif
 
 #if MVK_MACOS
-    if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v3] ) { fsMsg += "\n\t\tOSX GPU Family 1 v3"; }
-    if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v2] ) { fsMsg += "\n\t\tOSX GPU Family 1 v2"; }
-    if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v1] ) { fsMsg += "\n\t\tOSX GPU Family 1 v1"; }
+    if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v3] ) { fsMsg += "\n\t\tmacOS GPU Family 1 v3"; }
+    if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v2] ) { fsMsg += "\n\t\tmacOS GPU Family 1 v2"; }
+    if ( [_mtlDevice supportsFeatureSet: MTLFeatureSet_macOS_GPUFamily1_v1] ) { fsMsg += "\n\t\tmacOS GPU Family 1 v1"; }
 #endif
 
 	MVKLogInfo(fsMsg.c_str(), _properties.deviceName, devTypeStr.c_str(), _properties.vendorID, _properties.deviceID,
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKSwapchain.mm b/MoltenVK/MoltenVK/GPUObjects/MVKSwapchain.mm
index 3a87f1ff..c491966c 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKSwapchain.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKSwapchain.mm
@@ -189,9 +189,15 @@ MVKSwapchain::MVKSwapchain(MVKDevice* device,
                                                                                VK_IMAGE_USAGE_TRANSFER_DST_BIT |
                                                                                VK_IMAGE_USAGE_SAMPLED_BIT |
                                                                                VK_IMAGE_USAGE_STORAGE_BIT));
+#if MVK_MACOS
+	if ( pCreateInfo->presentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
+		_mtlLayer.displaySyncEnabled = NO;
+	}
+#endif
 
 	// TODO: set additional CAMetalLayer properties before extracting drawables:
 	//	- presentsWithTransaction
+	//  - maximumDrawableCount (maybe for MAILBOX?)
 	//	- drawsAsynchronously
     //  - colorspace (macOS only) Vulkan only supports sRGB colorspace for now.
     //  - wantsExtendedDynamicRangeContent (macOS only)
diff --git a/fetchDependencies b/fetchDependencies
index 5dd67e8f..2c33545a 100755
--- a/fetchDependencies
+++ b/fetchDependencies
@@ -113,7 +113,7 @@ update_repo ${REPO_NAME} ${REPO_URL} ${REPO_REV}
 # ----------------- VulkanSamples -------------------
 
 REPO_NAME=VulkanSamples
-REPO_URL="https://github.com/brenwill/${REPO_NAME}.git"
+REPO_URL="https://github.com/LunarG/${REPO_NAME}.git"
 REPO_REV=$(cat "../${EXT_REV_DIR}/${REPO_NAME}_repo_revision")
 
 update_repo ${REPO_NAME} ${REPO_URL} ${REPO_REV}