Hey,
Ben Jenssen: Yes, that's correct, I'm on Catalina 10.15.7. I just bought this brand new MacBook Pro, about a month ago. I decided to wait with the M1, and judging from the problems people have had with third-party developers vs. Big Sur, I was lucky enough to realize that my computer was delivered with Catalina.
I've been able to install everything else, upgrades and new plugins, from several developers (fx. SSL, Native, Spitfire, Celemony, Korg, Synthogy and others) with no issues whatsoever. Also the Pro Tools First program itself and 5 of the included plugins! It's just the remaining 14 plugins that can't be installed at this point.
Thanks again, Tom!
Anders