The Date is not yet confirmed. Writer Russel T Davies has said "November ish", and someone else called it the "Autumn story". If the BBC is showing it in November, the airdate will likely be announced by mid-October. Note that this only applies to Britain. It is not known when BBC America in the US or Space Channel in Canada will air the special. The same goes for the final two David Tennant specials, which are expected to air around Christmas-New Year's.