Ben Rudolph from Microsoft gives us a closer look at the upcoming Windows Phone 7.8 update for devices currently running 7.5. Of course, the key highlight of the update is the new Start Screen from Windows Phone 8. Although it’s an early build, you can see it in action on a Nokia Lumia 900 in the video above. The redesigned Start Screen allows users to customize and personalize with adjustable tiles (re-size between small, medium, large) and new color options. Learn more about Windows Phone 7.8 from Microsoft’s site.