Last I checked, the higher-end Arista GA film ("Supreme") was made in Japan (that means by Fuji, I assume), and the lower-end one was made in China. Perhaps the Chinese maker went out of business or the contract expired. Perhaps the Chinese variety is simply costing them more now, and they are using a renaming so that people don't freak out over a big price jump on the same product.
Or is it the "Supreme" that is on the way out? In that case, apply everything I said above to the Japanese maker instead of the Chinese maker.