BBC Consumer Products have been in touch with some 2013 Doctor Who DVD release confirmations:

The Legacy Box-Set - Featuring The 4th Doctor - Shada & More Than 30 Years in the TARDIS Documentary. - 7th January 2013 - £TBA.

The Reign of Terror - Featuring The 1st Doctor - 28th January 2013 - £TBA.

The Ark in Space: Special Edition - Featuring The 4th Doctor - 18th February 2013 - £TBA.

The Aztecs: Special Edition - Featuring The 1st Doctor - With recently discovered episode of Galaxy 4. - 11th March 2013 - £TBA.

Terror of the Zygons - Featuring The 4th Doctor - 25th June 2013 - £TBA.

Spearhead from Space (Blu-ray) - Featuring The 3rd Doctor - High Def New Restoration from 16mm print + extensive Pertwee bio and Caroline John obit documentaries, exclusive to this release. - Date: TBA - £TBA.

Further details are coming soon, together with a full breakdown of the special features.

[Source: BBC Worldwide Consumer Products]