@adam, is there a place to reference which icons will remain if upgrading? I have some dashboards using icons that look likey they may come from FontAwesome Pro. Would the easiest way be to download the latest Universal PowerShell module and parse the -Icons option?
The two most frequently used icons for me are CheckCircle and Frown. In the return of the URL you shared I see circle-check and face-frown. Do CheckCircle and Frown map to those, or are these 1-to-1 with identical names between PSU and FontAwesome?
Yes. We will be providing the ability to bring in any icon set (including the Pro icons) in v4 and v3.9. The licensing for the pro font awesome icons requires that if you are producing content with a product (like is done with PSU dashboards and pages), then you will need your own license.