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Late Wednesday night, Apple quietly removed the fourth-generation iPod touch from their online store, replacing it instead with a modified version of the current generation. The new model features only a few differences from the fifth-gen, but the omissions are significant.

The updated music player features a 4-inch Retina display like that found on the current model as well as a dual-core A5 processor, but lacks the rear-facing iSight and loop attachment.  Aside from those changes, the new model is identical to the fifth-generation. Unlike the larger models, the 16 GB iPod touch is only available in one color option: black and silver, as seen above.

The 32 GB and 64 GB models remain untouched, suggesting a possibility that Apple is phasing out the older hardware in preparation for iOS 7, which is expected to be announced at WWDC in June. The new model retails for $229, which is $30 more than the previous generation.