Apple today announced the fourth generation of iPod Nano, the thinnest iPod ever with curved aluminum,  two-inch display & glass enclosure in nine vibrant colors.(silver, purple, blue, green, orange, yellow, pink,  RED and black. )

Apart from look & design the new Nano also incorporates some functional feature enhancements that includes

1. Apples has introduced its Genius Technology to automatically create play lists from you song libraries. The function works by taking one song and creating a play list based on the user’s song library and could also suggest other tracks the user might want to buy.
2. Refined user interface & a high resolution portrait display
3. Build in accelerometer which automatically switched to cover flow when rotated & goes to Shuffle when lightly shaken, so the sensors are kicking in seems fun.
4. 24 hours of music playback & 4 hours of video playback

How much does it cost

• 8GB Model for $149
• 16GB model for $199

“The iPod nano is the world’s most popular music player and we’ve made it even better for this holiday season,” said Steve Jobs, Apple’s CEO. “We think users are going to love the amazing new design, the automatic Genius playlist creation, as well as automatically going into Cover Flow with just a turn of the wrist.”

Check out the news & worlds thinnest & smartest iPod Nano
Apple Press Release