802.11ac also hasn't been ratified yet, so it's a pre-standard and not guaranteed to work with the final version. This happened with some of the earlier standa

802.11ac also hasn't been ratified yet, so it's a pre-standard and not guaranteed to work with the final version. This happened with some of the earlier standards but lately it hasn't been much of a problem. http://www.ieee802.org/11/Reports/802.11_Timelines.htm http://www.ieee802.org/11/Reports/802.11_Timelines.htm