Along with the release of iPhone 5, Apple also announced the availability of new iPods. The iPods also went through some major changes and these changes were done for iPod Shuffle, iPod Nano and the iPod Touch. iPod touch has a all-new design, 4-inch Retina display, A5 chip, 5MP iSight camera, and Siri, while the iPod Nano features a 2.5-inch display, FM radio, widescreen video, Bluetooth, pedometer, and Nike+ support.
All the three iPods come in a variety of colors to choose from. Now if you are looking to buy a new iPod and not able to decide on which to buy, here is a comparison chart (from Apple) which details the specs and features of all the iPod versions including the iPod Classic (160GB) and the old iPod Touch (4th Generation) and the latest editions. iPod Touch will have the latest iOS6 and you can install millions of apps from the app store. iPod Nano has a new interface with new icons but no support for any apps or games.
The 4th generation iPod Touch is also a good choice since it has almost all new features except the bigger screen and new processor.