@figuerres: well, its in the leaked Windows Blue (8.1) builds, its implemeted in C++ and exposed as WinRT WinMD, so its not POS.NET. Those leaked builds are Windows 8.1 Pro edition, but they are not RTM so who knows.
I exported the winmd metadata as C# here http://pastebin.com/LcqscVCd.
p.s. Windows 8.1 also got a 'Kiosk Mode' feature, also come from Windows Embedded editions.