Talked with a Kodak rep at NANPA last week. He told me the introduction of Ektar 100 in 120 was in response to a lot of demand from shooters using everything from the old Kodak bellows cameras to new(ish) Hassys and Mamiyas. He said they also got a lot of comment on the 35mm-only intro last year from Rollieflex people, who simply don't want to stop using their TLRs. I'm not sure, though, how well the 'new' film will go over, in the long run. It's available only in 100 ASA, and the 'old' Ultra Color came in several speeds. My wife, for one, really preferred the look of the 400 ASA version, on top of the 2-stop speed improvement. And, he told me, a 220 version is not in the works. OTOH, a 120 version was not to be thought of a year ago, so we'll see.
Me, I shoot film in my 35mm Contax and film and digital with my Hassleblad. I often shoot both, switching backs, on the same shot, although I've been guilty of skipping film now and again.
As a side-note: Does anyone know just why Kodak thinks its film now belongs in pastel blue boxes? The rep couldn't say, but seemed as bewildered as I.
PS: For those of a newer age, ASA=ISO, and Kodak film (and everything else) came in bright yellow trappings, dressed with red and black, for generations.