Baker Street Saturday - When is season 2 going to air?

Yeah, so I can't find a consensus on when season 2 of Sherlock is going to air. This link indicates it might air in Britain long before the U.S. I don't care about that as long as the DVD (my region!) is released in the fall.

Ah, another light Baker Street Saturday post because later today, my best friend's sister is getting married and it's going to be such a fun celebration!!!!!!!!!!!!!