This set covers an unusually long period – starting with the 2011 Christmas special, The Doctor, the Widow and the Wardrobe, which was previously released in 2012, passing through the five 2012 episodes which we’ll refer to as The Last Days of the Ponds to the 2012 Christmas special The Snowmen, and on to the eight 2013 episodes concluding with The Name of the Doctor. Now I’ve talked about all those episodes at some length or other, so I won’t repeat myself here. This is about the extras.
There is a pretty good selection here – there’s a load of behind the scenes stuff, previously made available online, and which in earlier times would have been on Doctor Who Confidential. There are assorted prequels and extra scenes, some of which have been released on line (such as the excellent Pond Life), and some which I don’t think have been seen elsewhere, such as Demon’s Run – Two Days Later, which goes some way towards explaining how Strax is less dead than he seemed to be at the end of A Good Man Goes to War. There are also some features made by BBC America, which are nicely watchable (apart from having to ask “who’s that?” a lot about the participants).
The Blu-ray is all nicely presented in HD over five discs. Buyers have the option of getting a digital copy using the generally unpopular Ultraviolet service (which I’ve never bothered to try, so I’m just going on what others have said).
All good fun, of course, and well worth watching to catch some details you might have missed on first watching.
 Word is that this will be a continuous run of episodes without any odd splits.