So what is the deal? Yamaha (and I am sure others too) has a receiver that will output to 11.2 with an "ideal" setup consisting of 11 discrete speakers and then 2 subs.
You may recall 5.1 is:
Front Left "Presence"
Front Right "Presence"
Rear Left "Presence"
Rear Right "Presence"
Second LFE (one is for the "right" and the other for the "left")
I can't imagine why anyone would need 11.2 since so little seems to be recorded as anything more than 5.1 right now.
So what gives?
M60s, VP180, VP150, QS8s, M3s, SVS 20-39PCi, Shakers