features an article
that speculates on features of the next (fifth) generation of iPods. Among the innovations forecast: a new scroll wheel to replace the iPod's trademark control device. In fact, Apple is moving toward vertical integration, manufacturing more of its own iPod components rather than buying them from suppliers. Apple also plans a removable battery (the lack of which was a longtime source of criticism) and will lower the price of replacement batteries (from $99 to $59).
Source: I4U Future Technology