I got some feedback after part 1 and part 2 of how to create a Pivot style for your Windows Phone 7 application - what I had created had a few issues. First, the pivot menu items across the top of the screen is supposed to be an endless scrolling menu. Second, there wasn't supposed to be an overlay of each pivot page on the edge like there is in the Panorama style.
I took a closer look at exactly how the Pivot control should look and interact. In the process I noticed that the Zune HD's pivot menu is actually different - it doesn't have an endless menu across the top. I also noticed that the menu on my AT&T U-Verse box uses the pivot style as well (not surprising, it runs on a Microsoft Media Room) - and it doesn't endlessly repeat either. The only way I could try and figure out exactly how it should look was by looking at the hacked ROM that showed up on the web right after MIX.
Above is a video of my current Pivot app (on right) working very closely to what can be found in the Photos application in the hacked WP7 ROM (on left). This was built by modifying the code from Creating a Windows Phone 7 Metro Style Pivot Application [Part 2]. I was hoping to get the code posted before heading out of town, but there is still some tweaking left to do - I will be posting a part 3 sometime next week.