Apple’s iPod touch line has been split between 4th generation and 5th generation models with the introduction of the 5th generation of the device.
The fourth-generation iPod touch was released in black in 2010. Apple released a white version in 2011. The 4th generation device includes a 3.5-inch Retina display, dual-cameras (FaceTime on the front, sub-1MP VGA on the back), and a thinner/lighter design compared to its predecessors.
In late 2012, Apple released the 5th generation iPod touch with an all-new design that is thinner and lighter than the 4th generation device. It also carries the same 4-inch screen as the iPhone 5, a Lightning connector, and faster processing with the A5 chip. It also now has Apple’s Siri voice assistant and a much improved camera system (5 megapixels on the back, and FaceTime HD on the front).
The 4th generation device comes with 16GB of storage while the 5th generation occupies the two higher price points with 32GB and 64GB configurations. The 5th gen model comes in a black and slate model, and models that include a white front and a silver, pink, blue, yellow, or red back.