More news about the upcoming "Fifty Shades of Grey" movie is slowly, but surely, being revealed.

Fans are starving for more information.

"Fifty Shades" producers Dana Brunetti and Michael De Luca recently did an interview with CNBC's Squawk Box about the hotly anticipated movie.

The "Fifty Shades of Grey," written by bestselling author E.L. James, tells the story of 22-year-old recent college grad Anastasia Steele, who enters into a dominant/submissive sexual relationship with 27-year old sexy billionaire Christian Grey, and both explore Christian's world of BDSM (bondage, dominance, submission, masochism) while trying to understand their complicated relationship.

In the interview, co-host Andrew Ross Sorkin asked the team if the erotic book would need to be R-rated, according to FiftyShadesFilm.

"That's correct. The challenge is similar to adapting from any medium. We're going to treat this like adapting from Ben's [Mezrich] books or any books or adapting from a play or comic book or magazine article," De Luca said. "Anything that's not film, you get into a process of adaptation, and we're just going to kind of bring the same criteria to the adaptation of this. Obviously with this, when you're dealing with something that's found such incredible mainstream success, you want to preserve everything that's wonderful about it. The success of this has certainly been breathtaking, and we're going to honor that in our quest for the perfect adaptation."

When asked about if the plot is good enough to where porn doesn't need to be included for people to come watch it, De luca said, "You should definitely read the book.

"It's a beautiful, earnest love story. It's a 'first love' love story. A young love story. And that's the kind of engine that drives the whole enterprise. It's really about the arc of a relationship, and that I think will be easy to preserve and must be preserved in any compelling film adaptation."

Recently on Twitter, Brunetti let his fans know, "Cast of a film is usually decided on with a directors input..." This most likely means that everything "Fifty Shades" fans are saying are just rumors and that the crew has not picked a director, or a screenwriter for that matter.

One can only fantasize.

Recently, James took to Twitter to address all the casting rumors on who will play the lead parts of Christian and Anastasia.

"I am not making any comments on casting the movie. No one is ruled out or in yet - far too early," she tweeted.

In recent news, it was said that "The Descendants" star Shailene Woodley, 20, has "caught the eye" of James, and might be up for the role of Ana.

Click HERE to vote for your favorite star to play Anastasia Steele in a new B&R poll!

What do you think about "Fifty Shades of Grey" being R-rated? Comment below!