With these companies now saying do not upgrade the OS I fully understand why PG Music has said nothing about BiaB Mac 2019. It will be interesting to see if any other type of software companies come out with similar announcements.
Mojave 10.14.6, iMac 4K, Logic Pro X, BiaB UltraPak 2019 Mac, Native Instruments A61.

Catalina 10.15, MacBook Air, Logic Pro X, BiaB Ultrapak 2019 Mac, Arturia Keystep.