The pictures reveal that the iPod touchs camera is in the center of the device, not offset like the camera in the iPhone.
The nanos new camera is at the bottom left corner, which becomes top left when the iPod is held horizontally to take a picture.
According to the information received by Cult of Mac the outside dimensions remain largely the same as previous models, but the Nano gets a widescreen display, the better to take photos with the camera on the back.
Hit the link below to see many more cases for the new iPods.
[Images Via Cult of Mac]