Christian Schaefer or better known as @derSchepp on Twitter did a great summing up talk at the Microsoft - Technical Summit 2016 a few weeks ago about the HTTP protocol history and the newest baby — HTTP/2 — in special.
You can watch the video below, but I’m sorry for the non-german readers… the talk was given in German by Christian as it is his native language and the summit took place in Darmstadt.
Have fun!