This Forbes article provides more details about the rumored U2-special edition iPod.
According to their article:
Sources close to the group say the U2 edition of the popular digital music player will come preloaded with the band's new album, How To Dismantle An Atomic Bomb, along with portions of the Irish supergroup's 25-year catalogue. The iPods will be black and will be made available the same week as the band's 11th studio album, which is slated to be released in the U.S. by Universal Music Group's Interscope Records on November 23.
The upcoming U2-edition of the iPod was previously rumored with an Apple Music Event scheduled for October 26th.