Q: Hotspot image popover?

Anything is possible: it's software!

See the "Curiosity Hotspots" example project in the iBooks Author widget examples dmg:

https://developer.apple.com/devcenter/download.action?path=/ios/iad_producer_4.1 /iad_producer_4.1_ibooks_author_widget_examples.dmg

Awesome example.  Where did you go in the dev center to reach these?

developer.apple.com/iad/iadproducer is the starting point for all things iAd Producer.

If you are trying to make interactive widgets for iBooks using iAd Producer, you create an "iBooks Author Widget" (right-most icon at the top of iAd Producer's "New Project" window). Once the widget is complete, export it (File > "Export to Disk (Optimized)…"), then drag the resulting .wdgt file into your iBooks Author project. iBooks Author will automatically create an "HTML5 Widget" in the book from the file you dragged.

Here's the help link that describes the steps for creating a widget:

https://help.apple.com/iadproducer/mac/4.1/help/#iadef4051b7c

Message was edited by patixa to add the link to the application's help documentation.