EMIENM TALKS ABOUT RELAPSEEminem has revealed details of his long-awaited new album, "Relapse," in an exclusive interview with Billboard, conducted via email. The set is due next spring from Shady/Interscope.Eminem is working on "Relapse" with longtime collaborator Dr. Dre, who put his own album, "Detox," on the backburner to help bring the project to completion."Me and Dre are back in the lab like the old days, man," Eminem says. "Just him banging away on tracks and me getting that little spark that makes me write to it. I don't have chemistry...