Keeping with the usual tradition, it will be a 90 minutes episode of Sherlock and John's awesomeness. When asked about what to expect for the fourth installment of the show, Steven Moffat said:
“Series Four! At last! It’s always special to return to Sherlock but this time it’s even more special as we’re doing… a Special! Not only THAT, we’ll then be shooting three more episodes which will take Sherlock and John Watson into deeper and darker water than ever before. The whole Sherlock team are terrifically excited to return for four new adventures. The Game is on – again!”
The one-off special is said to be filming sometime in early 2015 most likely in January while the Season 4 is said to be filming in the months after.
On the Scale of 1-10, How excited are you?