Rock and Roll Hall of Famers U2 [ tickets ], fresh from launching the North American leg of their ongoing world tour, will give fans a treat next month with the release of an expanded version of their breakthrough 1984 album "The Unforgettable Fire."

Due Oct. 27 from Island/Universal, the re-issue will be available in four configurations, among them a 2-CD edition that contains rarities and B-sides, including the previously unreleased "Disappearing Act" (a.k.a. "White City"), which the band began recording in 1983 with Brian Eno and Daniel Lanois.

Also available will be a standard remastered edition on both CD and vinyl, and a deluxe box set containing both CDs (the original album and the rarities disc) as well as a 56-page bound book and a DVD featuring rare videos, concert footage and more.

The iconic Irish rockers, who launched the North American leg of their U2 360 world tour last weekend in Chicago, continue the trek Wednesday (9/16), the first of two shows in Toronto. The outing is currently scheduled to run through an Oct. 28 concert in Vancouver, British Columbia. Dates are below.

The band is touring behind its 12th studio album, "No Line on the Horizon," which surfaced in February. The set debuted at No. 1 in 30 countries, including the US, where it posted first-week sales of about 484,000 copies.

The album's first single, "Get on Your Boots," peaked at No. 37 on Billboard's Hot 100, with the second single, "Magnificent," surfacing in May. A third track, "I'll Go Crazy If I Don't Go Crazy Tonight," hit radio last month.