Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.
It was the first issue of DWM to predominantly feature John Hurt as the War Doctor on the cover. It also used the traditional headline "John Hurt is the War Doctor", although the use here was a special case, as it normally was used to indicate the recasting of the Doctor, and John Hurt's Doctor was introduced retroactively, as well as the fact the headline was modified to denote him specifically as the "War" Doctor; instead, it was used to celebrate his return to the role in a line of Big Finish Productions audios called The War Doctor, making a technical debut outside the linear progression of the Doctor Who television series.
The comic story Theatre of the Mind has no formal credits. However, the people who worked on the story are seen credited on a playbill for a play within the narrative as a part of the scenery, right beneath the story's title. On the playbill, Roger Langridge is given the themed billing of "Master of Ceremonies", James Offredi is "Lighting" and Scott Gray and John Ainsworth are "Producers".