The iPod nano has been Apple's most popular iPod and not without reason. It had the right combination of performance, design, features and ease of use that appealed to users. Besides, it was an 'iPod' and people really don't need too many reasons to buy it anyway.
If you go through all the different generations of the iPod nano you would notice they all look similar, except for the third generation model, which looked more like a smaller iPod classic. This year Apple has completely redesigned the nano and it looks nothing like any of its predecessor. In fact it looks more like the current generation shuffle now. The iPod nano is now far closer to matching the definition of its name.
When redesigning the nano the main goal for Apple was to make it smaller and the only way they could do that was to get rid of the click wheel. Removing the click wheel meant complete loss of control over the player, so the display had to be a touchscreen. Which is exactly what the new nano has.
The design of the new nano is brilliant. It's amazing how small they have managed to make it this time. The difference is even more staggering when you keep the current and the previous nano side by side. The new nano is only slightly larger than the current generation iPod shuffle. But when you consider the fact that the new nano has a touchscreen display, an accelerometer and a bigger battery inside it, you feel even more amazed. Kudos to the Apple design team for having managed to fit everything inside that little thing.
Having said that, the nano sometimes feels a bit too small. There is very little to hold on to and it feels awkward when you hold it in your hand. It's even more difficult to hold when you connect headphones with a large plug to it. I found it easier to just clip it somewhere and then use it.