I saw that Ilford is offering 122 film. I'm glad they are doing that. I intend on buying some. They have it listed as 3 1/4" which is the image size, not the film width. The actual film width is 3 5/8". I suspect they will correct that before production.
Last year, I made a jig to cut 122 film from wider stock. I have some 12" wide Tri-X and some 5" wide FP4+. It's a challenge to cut in the dark, but doable.