AJ McLean and Howie Dorough chatted with Rolling Stone about what to expect. Here's five things we learned. 1. The boys aren't just singing about girls: With four of the five members being dads now, the guys sing about more diverse topics this time around, like fatherhood and bullying. One track specifically, "Show Em What You're Made Of" is an anthem to combat negativity.

"Kevin was like, 'Why don't we write something that's about our kids or is a positive reinforcement-type song because there is so much negativity out there and bullying and all this crap that's been going on?' The world needs positivity," McLean explained. "Not only was it my daughter and his son, but it was all of our kids that were influenced and even other people's kids and just fathers, mothers, people that are the kind of people that encourage you to go out and to show 'em what you're made of, give it your all and the song turned out beyond what I ever expected it to be."

2. A Tribe Called Quest and Metallica influenced the band's upcoming documentary.: BSB will release a documentary that dives into the past 20 years of the band and A Tribe Called Quest and Metallica are to thank for the doc coming to fruition. Stephen Kijak, the filmmaker behind the Rolling Stones' documentary Stones in Exile, will direct the film.