What was posted is the release notes is probably the only answer you will get on the subject. It may have something to do with copyright protection, but I am only guessing.
“At the express request of Fujifilm, we have revised how the Fujifilm digital film renderings function in our software.
These renderings now apply exclusively to RAF files from Fujifilm cameras and only correspond to the simulations
available on those cameras.”
Fuji PROVIA/STANDARD
Fuji Velvia/VIVID
Fuji ASTIA/SOFT
Fuji CLASSIC CHROME
Fuji CLASSIC CHROME +
Fuji PRO Neg. Hi
Fuji PRO Neg. Std
Fuji CLASSIC Neg.
Fuji ETERNA/CINEMA
Fuji ETERNA BLEACH BYPASS
Fuji SEPIA
Fuji Nostalgic Neg.