A great article I came accross explaining how HTTP2 works is availible at http://daniel.haxx.se/http2/http2-v1.6.pdf
It has some intresting challenges for adoption and implications for Network Security and vendors of the associated devices used to secure them.  One of the main challenges being that the format moves from an easy to read text form, to a binary blob.  This means Deep Packet Inspection (DPI) of these frames becomes a lot more intensive.
It will also be interesting how this gets adopted for the ‘average’ site.   I can see the Goog, Facebook and Microsoft adopting it but how long did it take for HTTP 1.1 to become adopted ?
One to monitor……