I actually happened upon this new feature just before the video went live, and I figured it out on my own (yay me lol).
I did happen upon an interesting interaction, however: I am using cascading combo boxes on a form where I want to select an option, but don't want to store that value to the form's corresponding table (I am using the selected option for use in a transaction log), so the combo boxes are unbound.
When I went to reference the value in the combo box (presumably the ID) for the transaction log, it was instead returning the number of the dropdown list (0-7) instead of the ID.
I was able to resolve this by instead referencing "combo.column(0)", which returned the ID number that I was looking for! I thought I would share, just in case anyone else finds themselves in a similar situation.