[From Eric Mann] Although not new news, Vodafone's Treo 500v makes headlines on Engadget for it's rather different UI. "For all of you fervent Treo fans chomping at the bit to get your hands on the 500v, here's an interesting piece of information which may stir "things" deep inside your mind and body. Apparently, the Windows Mobile-equipped smartphones will be touting a UI that's a pretty big step away from Microsoft's staid and standard operations. According to a slow, yet detailed video we've seen, the new interface will be pulled together using a completely revamped "start menu."