I'm really quite intrigued by this. They've announced they're working on a trilogy of albums, entitled ¡Uno!, ¡Dos! and ¡Tré!, the first of which is due out sometime in September.
They're working with Rob Cavallo on it, who's done every album between Dookie and American Idiot, so signs are good. I'll be completely honest, I thought 21st Century Breakdown was rubbish. So I'm interested to hear how "...the most prolific and creative time in our lives" ends up sounding.