Apple today introduced the all-new iPod nano with a new aluminum body, 24 hours of battery life, and more than twice the music capacity for the same price as the previous generation. The new iPod nano features Apple’s innovative Click Wheel and an even smaller, thinner and lighter design available in silver, pink, green, blue and black. The new iPod nano models are now available — 2GB iPod nano model in silver is available for US$149, the new 4GB models in silver, pink, green and blue are available for $199, and the new 8GB model in black is available for $249.