Our user assistance team is starting to put together some cool "how to" articles with web cast demos. You might find these useful and interesting:
Adding (All) Options to Combo Boxes or List Boxes in Access 2007Adding Tabs and Controls to the Office Fluent Ribbon in Access 2007Creating User Prompts in Access 2007Displaying Custom Dialog Boxes for Custom Delete Actions in Access 2007Synchronizing Combo Boxes on Forms in Access 2007
On a different note--I'm done with jury duty and back at work. Jury was interesting--I will try to put together a blog post about my experience if people find it interesting.
WRT the runtime--last I heard the final build is in the works. It might be released within the next week if all goes well.