I'm going through the docs on subscriptions and free trials, and it looks like free trial are only for renewable subscriptions. I'd be interested in a free trial that does not roll automatically into a renewable subscription but that requires the user to explicitly opt in to a subscription tier once the free trial expires. Appreciating any pointers in this regard.

I installed the profile for macOS Big Sur, but I got updated to Catalina beta 10.15.6 beta instead. Is it possible to install the Big Sur beta already?