This is a
very strong indication that it will be released on Blu-ray.
I'm not as optimistic. I hope you're right, but they've aired the saga for years without even releasing it on a standard dvd.
Related topic: I still have "The Godfather Epic" on vhs that I purchased in 1983!
When the Corleone house was for sale, the owner said during an interview that their own tapes they made during the production may become part of a 40th anniversary edition of the films.
In any case, now that it's being broadcasted in HD, Blu-ray or not, I will probably get my hands on it anyway.