While this is a pretty technically detailed white paper on 802.11ac from Cisco; it does a very good job of explaining the technology “under the cover”. Terms like channel bonding and others are explained.
Newer and faster necessarily is not always better as you have to consider your application requirements. Folks are not only now designing networks with different ESSIDS (there are reasons for limiting these), different security schemas and network topologies, but separation by frequencies. 802.11ac is all 5.0Gz. 802.11ac will like wireless has done is upstaging again the wired side of things. The challenge to deployment will become the backhaul of Gig Ethernet and/or fiber, and/or the combination to provide the capacity at the edge.
A long way from 1999 when I cut my teeth with Symbol when 802.11b got approved by IEEE.
