The BBFC has classified an trailer for the first Doctor story The Ark, indicating it is due for DVD release in the next few months.
The Ark was the sixth story of Season 3, and was first broadcast between 5th March and 26th March 1966. Alongside William Hartnell as the Doctor it stars Jackie Lane as Dodo and Peter Purves as the Steven Taylor.
The story is set in the 57th segment of time, some 10 million years in the future, when the Earth has been destroyed by the sun going nova. A giant spaceship carrying all the Earth's surviving plant, animal and human life is on a 700 year journey to a new home on the planet Refusis II.
The story was written by Paul Erickson and Lesley Scott and directed by Michael Imison.
The Ark was first released on VHS in 1998 and is also available on CD with linking narration by Peter Purves.