Is it possible to access HTML Popups (found in layer properties) programmatically in ArcGIS Desktop 10.2?
I can't find any reference but thought I'd ask to double check.
I am not aware of any way to do this.
If you would like to post an ArcGIS Idea to have this implemented, then it is certainly one that I would vote for.
The asker posted their ArcGIS Idea as Programmatically access HTML Popup in Layer Properties.