The release will contain a couple of special features alongside the 60-minute episode detailing the inspiration behind the episode and the making of it, and you can view details of those below
The Doctor: A New Kind of Hero - The Doctor has no superpowers, but he can stand proudly alongside the greatest superheroes ever known. In this special program, we’ll ask what it is about the Doctor that makes him so heroic.
Doctor Who Extra: The Return of Doctor Mysterio - Join stars Peter Capaldi and Matt Lucas, showrunner Steven Moffat, and many more for this very special inside look at the making of ‘The Return of Doctor Mysterio.’The DVD & Blu-ray will release on 23rd January 2017, and you can pre-order them here.
[Source: Doctor Who TV]