Nirvana's cd Nevermind is almost 20 year old and a special 20th anniversary expanded edition will be released in September. The 4 cd/1DVD set drops September 20th. Spin did a cover story on the cd and its influence for the August issue of the mag. Be sure to click over to Spin's article to check out the haunting cover of the magazine--it features a picture of Kurt Cobain floating in the water (recreating the Nevermind cover art) from 1991. The issue hits newsstands on July 26th or if you have an iPad it will be available this Tuesday.