As Series 6 bounds into full production, some details have been arising as to its content. Today a read~through for the Neil Gaiman story, currently Episode 3, took place. Speaking on his website, the Coraline writer said:
The 2011 Gaiman story is being directed by Richard Clark (Gridlock, The Lazarus Experiment) who is also directing a Mark Gatiss story for Series 6 (next in the shoot). The director describes the episode, which is currently number four in the series, as "wonderful".
ETA: The Gaiman episode is now fourth whilst the Gatiss episode has been put back to the second half of Series 6.