Steve Jobs today announced the 4th generation iPod Nano, which comes in the biggest range of colours yet. It also now comes in 8GB and 16GB varieties and includes an accelerometer. This also means that to turn shuffle on, you simply need to shake the iPod.
It's the thinnest iPod ever and has a new UI which will be implemented across the range in an upcoming update. The Classic has also been updated, with the standard being a 120GB. The 160 GB has been discontinued.