UPDATE: BBC Worldwide have sent The Gallifrey Times a statement regarding this news.
Originally the decision was taken not to include this release on the box set as it had previously been released as a standalone product. However after listening to feedback from our fans we have decided to include the episode and its prequel on the set. The price of the set will not change as a result of the change of contents.
BBC Worldwide have announced that the UK release of the Complete Seventh Series boxset will now include the 2011 Christmas Special – The Doctor, The Widow and The Wardrobe, and its prequel.
The boxset was previously announced to include just 14 episodes in the UK, but the addition of the Christmas Special has raised the episode count to 15 in the UK and the US. The boxset has also been announced to include five discs rather than the previously announced three.
The Complete Seventh Series will be released in the UK on 28th October.