New Windows Marketplace for Mobile App

Saw this video over at Pocketnow.  I had trouble getting the update on my phone.  Sometimes when starting the marketplace app, it would check for the latest version of the marketplace app.  It was not doing this automatically yet, but if you uninstall the marketplace app then download it again (by clicking on the Marketplace icon that remains in the start menu) the updated application will be installed.  Here is a video on how to change regions with the new app.