Benedict Cumberbatch has recently been spotted filming in Sherlock Holmes’ signature coat. According to reports, a new writer has been attached to a “Sherlock” project. Will a new writer really come in to write “Sherlock” Series 4?

According to Deadline, a new writer has indeed been tapped to pen a script about the world’s only “consulting detective.” But it would not be for BBC’s “Sherlock.” The new writer, James Coyne, will instead work on the script for the movie, “Sherlock Holmes 3.”

The movie will be a follow-up to the 2009’s “Sherlock Holmes” and 2011’s “A Game of Shadows.” Guy Ritchie will be directing the movie. Meanwhile, “Iron Man” actor Robert Downey Jr. is set to return as the titular detective from 221B Baker Street. Actor Jude Law is set to join him as Dr John Watson. 

“Sherlock Holmes 3” has been confirmed since October 2011. Drew Pearce was first hired to pen the movie’s script. But it looks like Coyne has been brought in to do a rewrite. Coyne previously worked with the movie’s producers last year. He wrote the Black List script “Treasure Island” for Warner Bros. and Lionel Wigram. Coyne’s latest film project is “Ulysses: A Dark Odyssey.” The movie is currently in pre-production.

Meanwhile, Cumberbatch will still star as Sherlock on the fourth season of the BBC series. According to Mail Online, the actor has been spotted filming in Cardiff for the show’s Series 4. He was spotted wearing his signature coat and scarf. The fourth series of “Sherlock” is rumoured to air in January 2017. On the other hand, no date has been confirmed for the premiere of “Sherlock Holmes 3.”

In the meantime, you can catch Downey Jr. as Iron Man in “Captain America: Civil War” this coming May 6. Cumberbatch, on the other hand, is set to become “Doctor Strange” on November 4.