3. Key information on the 2015 special episode - The script for the 2015 "Sherlock" special has been co-written by Mark Gatiss and Steven Moffat, with Douglas Mackinnon ("Doctor Who," "Line Of Duty," "Jekyll") directing the episode. Production Designer Arwel Jones is back, while Suzie Lavelle ("Doctor Who," "Ripper Street") joins the team as the Director of Photography.
4. The special will wrap up Moriarty's story arch - According to sources the special episode that will air December 2015 will reportedly wrap up the Moriarty story arch.
7. Janine Returns! - Another love interest of Sherlock's and Mary's close friend, Janine will return for the upcoming season. According to Moffat she will definitely be back and her and Sherlock will be friends. The writer told IGN: "He likes her, though. He'll see her again. They'll be pals. I loved Yasmine's performance as Janine -- she still likes him in the end. At some point, you know, if Sherlock Holmes has to go to a function and he needs a date, he'll phone her up. Now, he'll not expect her to say no. She'll be very cross with him, but she'll show up, and they'll have a good time. They will, because he likes her."
8. Moriarty is not Alive! Moffat said early on that Moriarty is indeed dead and not coming back. The writer said "He shot himself in the face. What more do you want?" However, if you are suspicious like we are then you could say that this is a ploy to keep the surprise alive.
10. Future seasons are already planned! Moffat told the Guardian that He and Mark already planned ahead for more seasons saying, "Rather excitingly, Mark and I, for no particular reason, we just got out of the rain and sat at the top of the [Sherlock] production bus … and we just started plotting out what we could do in the future." He also added that there was no plan for a movie as each episode is a feature length itself.
12. Is Sherlock Gay? Design & Trend reports that Sherlock Holmes may indeed be gay because of some things actor Benedict Cumberbatch said in a recent interview with The Nerdist Podcast. Cumberbatch spoke with Chris Hardwick about the differences between his character and Doctor Who. "He talks fast and is clever," said Cumberbatch in regards to the Doctor. "That is literally the only bracket they share. They've got different dress senses, different taste in the sex of their partners..."