I know that the new Ferrania film project mentioned that they have 220 capability so maybe they will eventually offer a 220 film.
My hopes are currently pinned on that comment from them. A while back I purchased one of those oversized 4-1/2 inch Nikor SS tanks with a matching 220 reel from Bob Shanebrook ('laser') here on APUG just in case somebody might come along and resurrect the 220 format.
My fingers are crossed.
"Hate is an adolescent term used to stop discussion with people you disagree with. You can do better than that."