iLounge claims to have the demensions of the new iPod nano and iPod touch. They do somewhat match some descriptions we have been seeing. Keep reading to see the leaked demensions and a brief description.
The new iPod nano is measured at 90.75mm tall, by 38.75mm wide, by 6.08mm deep, meaning that this will be the thinnest and narrowest iPod nano yet. The new nano seems to have a curved design but not as much as you might think.
The second generation iPod touch is shown to have a more iPhone-tapered-back design. It is just barely taller and slightly thicker, which might contribute to a greater battery. It also appears to have an antenna enclosure on its top left, and volume controls on the right, which all agrees with what we have heard from Kevin Rose about a slight cosmectic changes, and from iDealsChina which said that the iPod touch would have GPS (although i see no reason why it needs it).