@ghdprentice if you read that article Tomlinson Holman states:
As Mr Holman is quick to point out, any audio engineer confronted with the question, “what do you want to do with a higher bitrate?”; will always ask for more frequency range and more dynamic range because they don't know what to do with more channels. "It's a new paradigm." "Just to go to 192 KHz sampling rate to satisfy passing bats instead of human beings is pretty crazy, but adding channels is of very great value." (For those readers not terribly familiar with flying rodents, bats have an ability to hear ultrasonic frequencies, the kind you can reproduce with a 192 KHz sampling rate). In answer to the question what is 10.2? Mr Holman replies "It is as far as we can push the market without people thinking we are crazy."
10.2 versus 9.1 Surround Sound