The following lines were added (+) and removed (-):
== Models ==Released 2007.Released 2007. Discontinued.Released 2009. A slimmer form factor, improved battery life, and a higher performance E Ink display.Released 2009. Discontinued. A slimmer form factor, improved battery life, and a higher performance E Ink display.Released 2010.== Sources ==* [http://pocketpccentral.net/blog/2011/01/01/kindle-101-what-is-a-kindle/ Kindle 101: What is a Kindle?]