How can we check if the current OS is win8 or blue

Win8.1 and Win8 has the same OS Version. How can we check if the current OS is Win8 or Blue? The Environment.OSVersion is giving us the same results:

Environment.OSVersion 6.2.9200.0 Environment.OSVersion.Version 6.2.9200.0 Environment.OSVersion.Version.Major 6 Environment.OSVersion.Version.Minor 2