Among the few changes in Apple’s iPod nano software update version 1.2—which ships on the 2011 iPod nano—is the addition of 16 clock faces to the two originally available on the 2010 model, an apparent acknowledgment from Apple of the popularity of watch accessories for the diminutive touchscreen music player. The new assortment includes a wide variety of faces, including a Nixie tube clock-inspired face, and Disney-licensed character…