The seven-song 1973 Allman Brothers Band 'Brothers and Sisters' album is the focus of a new box set set to hit stores this summer. The group is celebrating the 40th anniversary of the iconic album with a release that's expected to include significant bonus material.

Like many recent re-releases, the Allman's box set will be available in several configurations. The Morton Report says there will be a four-CD Super Deluxe, two-CD Deluxe and single-CD standard edition. There will also be digital and vinyl editions available for the June 25 release.

Bonus features have yet to be announced, but it is rumored that a famous show from the Winterland Ballroom in San Francisco, Calif. in Sept. 1973 will be included.

'Brothers and Sisters' includes the Allman's biggest radio hit in 'Ramblin' Man' as well as concert favorites like 'Southbound' and 'Jessica.' This was the first complete album the Allman Brothers Band recorded after the death of guitarist Duane Allman and bassist Berry Oakley, although Oakley appears on the first three songs ('Wasted Words,' 'Ramblin' Man' and 'Come and Go Blues'). Chuck Leavell and Lamar Williams made their debut with the group on 'Brothers and Sisters.'