Trailer: SHERLOCK - series 3

The BBC have released the official trailer for Sherlock's third series, which premieres on BBC1 this New Year's Day (and 19 January on PBS Masterpiece over in the US). It looks good and I'm a fan of Benedict Cumberbatch's tetchy and supercilious approach to playing Holmes, but coming two years after the last episode... has excitement over the "how did Sherlock fake his own death?" mystery blown over? I'm still curious to know what the explanation is, but it's a shame this show can't be produced any quicker. A six-month wait for the answer would have been fair, or a year at the absolute most... but 24-months? The answer had better be suitably brilliant, Mr Moffat and Mr Gatiss...