Mirrorball is an upcoming live album by British rock band Def Leppard scheduled to be released on 3 June 2011. The album is to contain, as well as live recordings, three new studio tracks and a DVD containing both concert and backstage footage.
The album was announced on 22 February 2011, but almost a month earlier, on 26 January 2011, Phil Collen said in an interview with WNCX that the band had already written and started recording the new songs, and said the album was planned to be released in May 2011. Release dates and the album's artwork were announced on 13 April 2011, with the album to be released on 3 June 2011 in Austria, Germany, and Switzerland, 6 June for the rest of Europe, and 7 June for North America.
The Album shall include three new tracks: Undefeated, Kings of the World and It's All about Believin.
Source: Billboard / Wikipedia