Oops - I must have been spending too much time in the dark. I did not realize that this film has been available at B&W and others even though it is marked in highlighted letters in my price list as NEW. Other dealers just have been getting it through third parties or they have a "special" arrangement with Fuji.
Exciting news indeed, but bear in mind that this is pack film and not sheet film. You will need to buy a Fuji PA-45 pack film holder to use either this or the FP-100C color film in 4x5. It's about 200 bucks at B&H.
Your Polaroid 4x5 single sheet film holder is useless with this film.
However, it looks like the smaller 3-1/4 x 4-1/4 packs of FP-100B will fit the pack film holder I have for my Hasselblad. I'm excited.