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.

As of iOS13 it doesn't seem possible to share user-highlighted notes from the Books app with third party apps. When selecting share, only Messages, Mail and Notes are shown as possible destinations. Is it now possible as part of iOS14? Is the UTI for these notes available for other apps as well?

The new PencilKit APIs allow to get stroke data from the user's drawing (PKStroke and PKStrokePoint). As far as I can tell though, the first time we can react to a new stroke is from within the canvasViewDrawingDidChange(_:) method of the PKCanvasViewDelegate. This method will get called *after* the stroke is finished. Is there a way to react to the stroke *while* it is being drawn by the user? That would allow for a seamless reaction to the user's strokes.

The letters used for the synthetic text are taken from some assets with the "drawing" extension. How are these generated and can they be previewed in Xcode somehow?

Is it possible to work directly with the API for human activity classification *without* using Create ML (which I believe requires Big Sur)? In other words, can I use the APIs directly instead, this was possible with the first iteration of Create ML.

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?