Up to now, apple has released two U2 products so far
The first U2 iPod special edition
The iPod U2 Special Edition is a limited collection of the classic iPod, available in multiple editions. The U2 Special Edition iPod can be identified by a unique red click wheel inside the black front. They also feature the autographs of U2 band members on the back.
On October 26, 2004, the first U2 iPod was released, based on the 4th generation iPod with a monochrome screen, 20 GB drive and chrome back. List price is $349/CAD 499.
The second U2 iPod featured a color screen with a signature engraved on the back.
On June 28, 2005, the second U2 iPod was released, based on the iPod Photo, with a color display, a 20 GB drive and a chrome back. Its price dropped to $329.
On June 6, 2006, the third-generation U2 iPod was released, based on the fifth-generation iPod, with a larger color screen, a 30 GB drive, and a black metal back. Its pricing remains at $329.
On September 12, 2006, the fourth and final U2 iPod was released, based on an enhanced version of the fifth-generation iPod, with a brighter color screen, a 30 GB drive, and a black metal back. Its price dropped to $279.So, are you looking forward to the iPhone 13 U2 version?