Def Leppard guitarist Phil Collen has revealed that the band has started writing 15 songs for their upcoming album.
In an interview with Classic Rock, the guitarist has explained that, while the band was originally planning to produce an EP, they now have enough material for an album:
"I just got back from a very productive and creative Def Leppard session in Dublin. We got about 15 songs started. What we thought was going to be an EP has now definitely turned into an album of new Def Leppard material."
Collen also revealed that the band has been on a new diet since working on the album, after meeting a gourmet vegan chef:
"The whole time we were there, the incredible gourmet chef Jeni Cook put the band on a raw vegan food diet - no, it's not just lettuce. We were treated to some of the tastiest foods I've ever had in my entire life.
"We had raw vegan desserts every day, along with sushi, pizza, Mexican-style wraps and incredible salads. The coolest side effect was that I lost seven pounds, while keeping all of my energy and strength up."