One acoustic show and one "loud and explosive" show would be played on each leg of the tour.

Adam Clayton has let slip some of the plans for next year's massive 'Songs of Innocence' tour, telling Rolling Stone that each stop on the tour might well get not one but TWO U2 concerts.

"There is talk of doing two different kinds of shows", Clayton said. "One night would be a kind of loud, explosive rock n' roll kind of event and the other night's show take the acoustic arrangements of some of the songs, and kind of present those songs in a much more intimate way. But we don't really know how that's going to sound and look."

The prospect of a series of acoustic shows for the world's biggest arena rock band is an interesting one and would represent something of a departure from the band's previous U2 360 tours, which was one of the most technologically impressive concerts tours ever conceived.

Either way, U2 are definitely touring next year and all signs point to them playing indoor arenas (instead of stadiums), presumably to help facilitate a more intimate experience for fans but we wouldn't bet against a Croke Park show as we just can't see Bono and the boys inside the 3Arena.