So has anyone seen the mini episode of Sherlock? It was called 'Many Happy Returns' and it was 7 minutes long. If you didn't see it then you can catch it on Youtube. Either search in : Sherlock mini episode or you can go on BBC's account and find it on there!

It was mostly about the return of sherlock and that he's solved cases around the world and is slowly getting closer to London. However he is not taking any of the credit because i'm assuming he cannot afford to be seen.... yet.

John had moved out of 221B and is some other flat. But i think most people on the trailer heard Mycroft tell Sherlock that John was not there anyway.