The musician will work alongside Christina Aguilera on the third season of the series, which is due to kick off later in the year.
“Welcome Billie Joe (@BJAofficial) to #TeamXtina!,” the show’s official Twitter feed said. “We are ready to rock out in Season 3.”
Armstrong said: “[The Voice is] not moulding artists, it’s just giving them a little bit of guidance and direction without giving them a complete makeover.”
Other guest mentors for the upcoming season are Rob Thomas, Mary J Blige and Michael Buble.
Source: Digital Spy