According to an ABI Research study reported by Earth Times, there will be "nearly two million 60 GHz chipset shipments in 2015"--a bit less than the number of HomePlug AV chips shipping today--per month!
Seems that today the "disadvantages inhibit WirelessHD’s adoption and negate its first-to-market advantage. First, the transmitters and receivers are expensive, in the $600-1000 range. They are also power-hungry."
Replacing a $10 HDMI cable with a $600 pair of hot boxes might not be a good idea.