A new screen protector for the yet-unreleased fifth-generation iPod nano appears to confirm information published by iLounge in May claiming that the new device would sport a wider screen ratio than its predecessor. The protector, offered by JVB Technology Co., measures 50.7mm by 33.7mm, for a diagonal screen size of roughly 61mm, or 2.4 inches. Notably, the current-gen nano’s screen also measures roughly 33.7mm wide, but is only around 42mm…