I have been disappointed for some time by the lack of progress from 1 GbE to 10 GbE. Links to APs do not serve one client device. APs working in two RF bands are common and extra bands are being tested to provide even more RF PHY. Better use is made of the 5 GHz band by 11ac. Directional antennas and 11ac MU-MIMO further increase capacity of RF PHY. These factors combined with climbing throughput demands means 1 GbE backhaul is already too little for some. Xirrus XR6000 series APs have 4x 1 GbE ports and 1x SFP+ 10 GbE port to handle backhaul from up to 16x 3 stream 11n or 11ac modules. 10 GbE needs to get a lot cheaper soon.