Microsoft's second preview of Windows Embedded Standard 8 is available now. The latest version, typically used outside the standard office and home environs, throws in Kinect for Windows compatibility, as well as some gesture filters for arm-flailing interaction and NFC support. The preview now supports nine languages and requires at least a 1GHz processor, 1GB of system memory (2GB if you're running a 64 bit system), a DVD drive and 7GB of space for the full install. Hit up the source for plenty more detail and the download itself.
Microsoft Windows 8