Green Day frontman Billie Joe Armstrong has revealed that the Californian punks have been working on their follow-up to 2009's 21st Century Breakdown.
"OK, here's the scoop," writes Armstrong in a post on Twitter. "[Green Day] has been jamming new songs everyday. There's a tonne of new songs. The direction is fresh and high energy. Feels great.
"I don't want to give away too much but just know that me, Mike [Dirnt, bass] and Tre [Cool, drums] and Jason [Freese, keyboards] are collaborating and having the best time playing music. And that's not bullshit!!