Def Leppard continues to celebrate its legacy with the release of a new signature guitar by Phil Collen, the announcement of a fourth volume in their box set series featuring an unreleased cover of The Beatles' 'Revolution', and a 2027 documentary titled 'Long Live Def Leppard'. Meanwhile, guitarist Vivian Campbell faces a recurrence of cancer, and Collen has indicated the band's next album may not arrive until 2028, while reflecting on the group's live vocal performances and the pivotal role of producer Mutt Lange in their 1980s success.