I've been doing this since VHS ruled the roost. I call my main theatre a 7.1 + height...that makes 9.1. But since height and width exist...I make the differentiation. Till Atmos...anybody not using a Yamaha and they had 11.1...that would make their theatre DTS Neo X. Now that IIz still exists and Atmos comes along...and we'll wait to see what DTS does as a salvo, I expect people to just say "I have a 13.1 in Atmos" or "I have a 9.1 in width" or "I have 11.1 in Presence" In this thread...and Dave in particular...5.1 + front Atmos still makes 7 speakers...7.1.