Frontman Joe Elliott recently revealed the project is essentially done. "Yeah, it's finished. We're just doing simple, last-minute adjustments," says Elliott. "The first song is going to go to radio [this] month. It's a 14-track, 55-minute album. It's just called 'Def Leppard' because that's what it sounds like. It doesn't sounds like any one specific era of Def Leppard. It's got everything.

"You'll listen and you go 'Oh, that sounds like Def Leppard' or you'll go 'That is Leppard, but sounds a bit like Led Zeppelin or Queen but you can hear the AC/DC or the Crosby, Stills and Nash coming through.'