Index: /trunk/include/VBox/ostypes.h
===================================================================
--- /trunk/include/VBox/ostypes.h	(revision 68313)
+++ /trunk/include/VBox/ostypes.h	(revision 68314)
@@ -131,4 +131,6 @@
     VBOXOSTYPE_MacOS1010_x64    = 0xB6100,
     VBOXOSTYPE_MacOS1011_x64    = 0xB7100,
+    VBOXOSTYPE_MacOS1012_x64    = 0xB8100,
+    VBOXOSTYPE_MacOS1013_x64    = 0xB9100,
     VBOXOSTYPE_JRockitVE        = 0xC0000,
     VBOXOSTYPE_Haiku            = 0xD0000,
Index: /trunk/src/VBox/Devices/VMMDev/VMMDev.cpp
===================================================================
--- /trunk/src/VBox/Devices/VMMDev/VMMDev.cpp	(revision 68313)
+++ /trunk/src/VBox/Devices/VMMDev/VMMDev.cpp	(revision 68314)
@@ -230,4 +230,6 @@
         case VBOXOSTYPE_MacOS1010_x64 & ~VBOXOSTYPE_x64:  pszOs = "Mac OS X 10.10"; break;
         case VBOXOSTYPE_MacOS1011_x64 & ~VBOXOSTYPE_x64:  pszOs = "Mac OS X 10.11"; break;
+        case VBOXOSTYPE_MacOS1012_x64 & ~VBOXOSTYPE_x64:  pszOs = "macOS 10.12";    break;
+        case VBOXOSTYPE_MacOS1013_x64 & ~VBOXOSTYPE_x64:  pszOs = "macOS 10.13";    break;
         case VBOXOSTYPE_Haiku:                            pszOs = "Haiku";          break;
         default:                                          pszOs = "unknown";        break;
Index: /trunk/src/VBox/Frontends/VirtualBox/src/wizards/newvm/UIWizardNewVMPageBasic1.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/wizards/newvm/UIWizardNewVMPageBasic1.cpp	(revision 68313)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/wizards/newvm/UIWizardNewVMPageBasic1.cpp	(revision 68314)
@@ -112,5 +112,7 @@
     { QRegExp( "(mac.*10[.,]{0,1}9)|(os.*x.*10[.,]{0,1}9)|(mac.*mav)|(os.*x.*mav)|(Mavericks)", Qt::CaseInsensitive), "MacOS109_64" },
     { QRegExp( "(mac.*yos)|(os.*x.*yos)|(Yosemite)",                                            Qt::CaseInsensitive), "MacOS1010_64" },
-    { QRegExp( "(mac.*yos)|(os.*x.*yos)|(Capitan)",                                             Qt::CaseInsensitive), "MacOS1011_64" },
+    { QRegExp( "(mac.*yos)|(os.*x.*capit)|(Capitan)",                                           Qt::CaseInsensitive), "MacOS1011_64" },
+    { QRegExp( "(mac.*yos)|(os.*x.*high.*sierr)|(High Sierra)",                                 Qt::CaseInsensitive), "MacOS1013_64" },
+    { QRegExp( "(mac.*yos)|(os.*x.*sierr)|(Sierra)",                                            Qt::CaseInsensitive), "MacOS1012_64" },
     { QRegExp("((Mac)|(Tig)|(Leop)|(Yose)|(os[ ]*x)).*64",                                      Qt::CaseInsensitive), "MacOS_64" },
     { QRegExp("((Mac)|(Tig)|(Leop)|(Yose)|(os[ ]*x)).*32",                                      Qt::CaseInsensitive), "MacOS" },
Index: /trunk/src/VBox/Main/src-all/Global.cpp
===================================================================
--- /trunk/src/VBox/Main/src-all/Global.cpp	(revision 68313)
+++ /trunk/src/VBox/Main/src-all/Global.cpp	(revision 68314)
@@ -469,4 +469,18 @@
     { "MacOS",   "Mac OS X",          "MacOS1011_64",       "Mac OS X 10.11 El Capitan (64-bit)",
       VBOXOSTYPE_MacOS1011_x64,   VBOXOSHINT_HWVIRTEX | VBOXOSHINT_IOAPIC | VBOXOSHINT_EFI | VBOXOSHINT_PAE |  VBOXOSHINT_64BIT
+                                | VBOXOSHINT_USBHID | VBOXOSHINT_HPET | VBOXOSHINT_RTCUTC | VBOXOSHINT_USBTABLET,
+      2048,  16, 30 * _1G64, NetworkAdapterType_I82545EM, 0,
+      StorageControllerType_IntelAhci, StorageBus_SATA, StorageControllerType_IntelAhci, StorageBus_SATA,
+      ChipsetType_ICH9, AudioControllerType_HDA, AudioCodecType_STAC9221  },
+
+    { "MacOS",   "Mac OS X",          "MacOS1012_64",       "macOS 10.12 Sierra (64-bit)",
+      VBOXOSTYPE_MacOS1012_x64,   VBOXOSHINT_HWVIRTEX | VBOXOSHINT_IOAPIC | VBOXOSHINT_EFI | VBOXOSHINT_PAE |  VBOXOSHINT_64BIT
+                                | VBOXOSHINT_USBHID | VBOXOSHINT_HPET | VBOXOSHINT_RTCUTC | VBOXOSHINT_USBTABLET,
+      2048,  16, 30 * _1G64, NetworkAdapterType_I82545EM, 0,
+      StorageControllerType_IntelAhci, StorageBus_SATA, StorageControllerType_IntelAhci, StorageBus_SATA,
+      ChipsetType_ICH9, AudioControllerType_HDA, AudioCodecType_STAC9221  },
+
+    { "MacOS",   "Mac OS X",          "MacOS1013_64",       "macOS 10.13 High Sierra (64-bit)",
+      VBOXOSTYPE_MacOS1013_x64,   VBOXOSHINT_HWVIRTEX | VBOXOSHINT_IOAPIC | VBOXOSHINT_EFI | VBOXOSHINT_PAE |  VBOXOSHINT_64BIT
                                 | VBOXOSHINT_USBHID | VBOXOSHINT_HPET | VBOXOSHINT_RTCUTC | VBOXOSHINT_USBTABLET,
       2048,  16, 30 * _1G64, NetworkAdapterType_I82545EM, 0,
Index: /trunk/src/VBox/Main/src-server/ApplianceImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-server/ApplianceImpl.cpp	(revision 68313)
+++ /trunk/src/VBox/Main/src-server/ApplianceImpl.cpp	(revision 68314)
@@ -149,4 +149,6 @@
     { ovf::CIMOSType_CIMOS_MACOS,                                VBOXOSTYPE_MacOS1010_x64 },
     { ovf::CIMOSType_CIMOS_MACOS,                                VBOXOSTYPE_MacOS1011_x64 },
+    { ovf::CIMOSType_CIMOS_MACOS,                                VBOXOSTYPE_MacOS1012_x64 },
+    { ovf::CIMOSType_CIMOS_MACOS,                                VBOXOSTYPE_MacOS1013_x64 },
 
     // Linuxes
Index: /trunk/src/VBox/ValidationKit/common/utils.py
===================================================================
--- /trunk/src/VBox/ValidationKit/common/utils.py	(revision 68313)
+++ /trunk/src/VBox/ValidationKit/common/utils.py	(revision 68314)
@@ -215,5 +215,5 @@
                      "11": "El Capitan",
                      "12": "Sierra",
-                     "13": "Unknown 13",
+                     "13": "High Sierra",
                      "14": "Unknown 14", }
         sVersion += ' / OS X ' + sOsxVersion + ' (' + codenames[sOsxVersion.split('.')[1]] + ')'