User blog comment:Blue Jay Superior/Doctor Who Series 9: The Magician's Apprentice/The Witch's Familiar Theories/@comment-27270572-20150220112229

I think jemma Redgrave has been confirmed for the episode so UNIT are probably involved and that teaser about the two parter with the picture of a MPA with red dots all over it also points to a UNIT involvement but maybe it is another Moffat time travel adventure! Where we may see more than one time zone.