Justin Bieber: What Comes After Believe?

MTV News has the scoop on Bieber's next single, fall tour and Mark Wahlberg movie.

Now that Justin Bieber has dropped Believe, you might be wondering what's up next for the 18-year-old. Well, between supporting his album and a burgeoning film career, the pop star shows no signs of stopping.

Bieber is still in the deciding process of nailing down just which track off Believe will be the next single, following up his smash hit "Boyfriend." And when MTV News spoke to Bieber's manager, Scooter Braun, he noted that there are several candidates from the album that seem like a likely follow-up release.

"We haven't picked the next single," he said. "We're gonna see how different songs react off the album. 'As Long As You Love Me' [with Big Sean] is getting a lot of love, so is 'All Around The World' [with Ludacris]. So is 'Die In Your Arms.' 'Beauty and the Beat' is coming with the album. We're gonna see what the next single is. We're gonna figure that out."

The guys are also in the process of figuring out how the massive, already sold-out world tour will look when it kicks off in September. "The tour starts at the end of September ... by the end of 2013 we're gonna hit the whole world," he explained. "He has been watching a tremendous amount of Michael Jackson concerts from the '80s and '90s. And he has been talking to me about how Michael incorporated magic and pyro and reveals and he wants to bring in that. [But] still do that acoustic thing, but he wants to take it to a whole new level.

"It's just really exciting," he continued. "Nothing makes him happier than being onstage. So it's gonna be fun to get back onto the road. I think he was an amazing performer before, but his level of dance and musicianship and his range [has grown]. He's a veteran now. I think he wants to take it to a completely new level."

Not only will Bieber stay busy in the music world, but Mark Wahlberg notes that things are also chugging along with their long-teased, in-the-works basketball movie. The actor insists they are inching closer to a start date. And, Wahlberg is co-signing Bieber's acting abilities.

"Obviously, [Bieber] is a very good athlete. People have seen him on MTV; he can play. But I also really think he can act," he said. "There's not going to be any shortage of pushing him in getting that kind of strong performance out of him, if we get to make the movie. We're just going to have to make him realize that he's playing a character so he can't have the same hairdo," he joked.