The band mark the 20th Anniversary of the album's release

U2 will mark the 20th anniversary of their classic album ‘Achtung Baby’ by re-releasing it in a deluxe package.

As reported by Rolling Stone the reissue will feature a plethora of unseen footage and rare versions of some of their most famous hits.

U2 guitarist The Edge said: “There’s some very interesting alternative versions that we discovered of songs that wouldn’t have seen the light of day” and described them as being “like ‘Achtung Baby’ out of focus”.

Paul McGuinness, U2‘s manager, added: “If you pile a lot of extra material and packaging and design work into a super-duper box set, there are people who will pay quite a lot for it, so you can budget it at a very high level and pump up the value.”

The Irish band are also working on an app for the iPad to tie in with the anniversary.

The record originally came out in November 1991.

U2 are set to headline Glastonbury festival tonight (June 24). Earlier this week, drummer Larry Mullen Jr admitted that the band had had arguments over which songs they should play as part of their set.