(some of the following is paraphrased from a Wikipedia entry):
In 1977, over several nights, NBC aired a special version of the first two movies (the third didn't exist yet) re-edited in chronological order and featuring previously unseen footage. This was aired under the title "The Godfather: The Complete Novel for Television". Many people felt that this version was superior to the two movies individually. A somewhat shorter cut of this version was released to home video by Paramount in 1981 as "The Godfather Saga: 1902-1959".
A decade later, after "The Godfather Part III" was released, a third unified version was released to video entitled "The Godfather Trilogy: 1901-1980". This version has been praised as being superior to all previous ones. In 2012, to celebrate the first film's 40th anniversary, AMC aired a new, slightly re-edited version of "The Saga/ TCNFT" (taken from a recently-discovered pristine print of the 1977 version, matted to widescreen) in HD. Unfortunately, none of the above versions have been released on DVD.
So the question is, does anyone have any sort of line on what the chances are we'll see any version of the chronological versions on Blu-ray (or DVD) anytime soon?