 On September 5, 2007 Apple announced that Cover Flow would be utilized in the third generation iPod nano as well as the new iPod classic and iPod touch models.Cover Flow was integrated into the fourth generation iPod nano by the use of an accelerometer which accesses Cover Flow when the iPod nano is turned horizontally on its side.On March 14, 2008, Mirror Worlds LLC sued Apple for infringing on its patents (nos.