Expendables 4 Movie Casting News: The Expendables sequel may have found its new villain and this writer is shaking in his seat. "The Expendables 4" may have cast Selena Gomez's on-again off-again boyfriend, Justin Bieber.

The Venture Capital Post also reported wrestling icon Hulk Hogan may join the cast.

Sylvester Stallone promised that the upcoming third installment of the franchise will improve its box office performance by getting an R Rating. Stallone has previously stated that he wants to release the film in 2016, but given how busy he's been lately, this might be a difficult feat.

According to some publications, 2017 is looking far more realistic at this point, and it's more likely that we'll see the film come out during that year.

Stallone is currently working on "Creed," the next installment in the knockout "Rocky" franchise. He also has a the new "Rambo 5: Last Blood" coming up. So "The Expendables 4" might have to wait.

But back to Justin Bieber. The Franchise Herald broke the unbelievable Belieber news. Stallone told Crave that all future "Expendables" movies will have a hard R rating. Allowing for more graphic violence. So, maybe the Bieber news isn't so bad.

According to The Daily Star, Stallone still had not ruled out Bieber as part of the cast.

Expendables 4 is filming in Bulgaria.

There are rumors that wrestling legends Hulk Hogan and Dwayne "The Rock" Johnson will play the  villains.

One new rumor said that Expendables 4 feature a time travel story line.  The mean team would travel back to WWII and go against Adolf Hitler.

"Seriously, if you're going to do a number four, break outside the box. Let's do something really different," Director Patrick Hughes told Crave Online in a recent interview. "I was like, 'You need to add a level of sci-fi.' So it's an action sci-fi. The slant of the sci-fi is something to do with a time machine, where they go through some void, right? And The Expendables land on the beach on D-Day, and it's them sweeping the Nazis out of France!"