The expansive 20th anniversary collection of U2's 'Achtung Baby' will finally be available next Tuesday, and lead singer Bono is hinting that the band may be looking back because they can't look forward. In an interview with Rolling Stone he says band might have dried up.

While his words seem thrown out on a whim, he did foreshadow an end of sorts. "We'd be very pleased to end on (2009's) 'No Line on the Horizon,'" Bono says. Guitarist the Edge also looks forward and sees equal parts bounty and dearth.

"It's quite likely you might hear from us next year, but it's equally possible that you won't." The band does have new music written but Bono says he's in no hurry to record. Instead, a long family vacation is in his immediate future after promoting the anniversary of the album that changed the trajectory of the band's career.

The uber deluxe version of 'Achtung Baby' includes just about everything that entered the studio during the 'Achtung Baby' recording process. We hear one a buyer gets a half-eaten sandwich -- rumored to be from Bono -- for plunking down the $469 to order it from the U2 official store.

The 'kindergarten' versions of select tracks may be of interest to U2's most passionate fans. They're the first drafts of songs like 'Tryin' to Throw Your Arms Around the World' and 'Who's Gonna Ride Your Wild Horses.' "The first time the paint goes on the canvas is a very, very exciting moment," Bono tells Rolling Stone.

Depending on your budget, up to six CD's, four DVD's, 16 art prints, an 84-page hardback book and Bono's trademark "The Fly" sunglasses are available. There are five different package options to choose from.