I've found how to view what was updated, but I haven't found how to view the entirety of the script.
To be specific, I want to read the details such as the messages about warnings, possible missing firmware, recommendations, etc that auto upgrade breezes right past. I can choose to upgrade via sparky-upgrade command in terminal rather than auto-upgrade, but I was hoping that I wouldn't have to do that.
Or maybe is there a setting to keep terminal open when auto-upgrade is complete?
Simply run the upgrade in any terminal:
sparky-upgrade