BBC started to tease Sherlock fans last night on twitter. Today, at 2:21 pm, BBC announced that Sherlock will be back not only for a 4th season, but also for a special, which is to be shot starting January 2015, with the rest of the season being filmed later that year. Which means (by my mental calculations) that it won’t be a Christmas special, right?!
“A special, plus a new series of three episodes — it’s a record-breaking run! Of course, it’s far too early to say what’s coming, but we’re reasonably confident that the very next thing to happen to Sherlock and John, is the very last thing you’d expect…” co-creator, writer and executive producer Steven Moffat .
Mark Gatiss added, “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!”