U2 are reportedly planning to celebrate the 20th anniversary of 'Achtung Baby' by reissuing a deluxe edition of the album, along with a deluxe reissue of its follow-up, 'Zooropa.' The two albums, which featured electronic and dance elements, marked a radical shift in sound for the Irish rockers.

Rolling Stone magazine breaks the news that the deluxe editions of 'Achtung Baby' and 'Zooropa' will be issued separately in various formats, along with a box-set version that will combine both albums with additional audio and video from the band's Zoo TV tour.

U2 manager Paul McGuinness is quoted in the article, saying, “There will be multiple formats. 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 band has been featuring quite a bit of material from 'Achtung Baby' in its recent setlists, and @U2 reports that the group also lensed an 'Achtung Baby' documentary last month with 'It Might Get Loud' producer Davis Guggenheim in Winnipeg. It's not currently known whether the documentary will be part of the forthcoming package.

Rolling Stone adds that an app for the iPad and other tablets might be a component of the upcoming reissues.

U2 have been paying tribute to departed E Street Band saxophonist Clarence Clemons during recent shows, mixing part of Springsteen's 'Jungleland' into performances of their own 'Moment of Surrender.'

Watch U2 perform 'Zoo Station'

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