IPod nano
On October 6, 2007 Apple released OS 1.0.2 which improved cover flow and made going throw the menu a lot quicker. On November 28, 2007 1.0.3 was released which fixed a couple of bugs. On January 15, 2008 1.1 came out which had support for iTunes movie hiring, music song lyrics and more bug fixes. 1.1.2 and 1.1.3 had bug fixes. They were both released in May and July 2008.