Yes, we’ve missed him. Both hims. Sherlock and Watson. And today the BBC announced that, indeed, Sherlock will return to screens with a special and three new episodes.
Confirmed: Sherlock Will Return

Yes, we’ve missed him. Both hims. Sherlock and Watson. And today the BBC announced that, indeed, Sherlock will return to screens with a special and three new episodes.
Each January and July, the Television Critics Association (TCA) holds the TCA Press Tour in Pasadena, California, where US broadcast networks and cable channels present program previews and host panels that include some of their shows’ stars, producers, and writers.
It is definitely happy dance time for Sherlock fans. Not only do we have the title for the final episode of the three that comprise Series 3, we now have confirmation that there will indeed be a Series 4!