During the company's earnings conference call today, Apple CEO Tim Cook commented on the state of the iPod, noting that the product is a declining category for the company:
The way we look at it, our business is a sell-through point of view less iPod -- all of us have known for some time that iPod is a declining business.
The iPod was Apple's "halo" product for years, getting new customers to buy Apple products for the first time. Since their peak in 2008, however, iPod sales have seen a fairly steady decline as the iPhone and iPad have captured more of the market that the iPod occupied previously.
Apple's last change to the the iPod line came with the debut of a new Space Gray color option for the iPod touch, iPod nano, and iPod shuffle at its September 2013 iPhone event. However, Apple has not updated the iPod classic in over four years, with that device more likely to be discontinued rather than refreshed.