Here is the cover for issue #446 of Doctor Who Magazine:
The magazine is out on Thursday 5th April 2012.
"What if... the Doctor and Susan had never left Gallifrey?You will probably have gathered that I am something of a fan of the Unbound series and a great part of that affection is due to this story. It is written by classic series writer Marc Platt and let us not mess about here, this guy can really put a tale together! It has a slightly ghostly feel to it and the manner in which "The Doctor" is introduced immediately throws us "off centre". Yet whilst so much of the idea and underlying plot is based around "a new doctor" without the constrains of canon, the story very cleverly uses the familiarity of Doctor/Susan relationship to give the listener some frame of reference to warm to the characters and to care about what happens to them.
In a marble mausoleum, deep in the cisterns beneath the Capitol, Gallifrey's favourite author faces his ultimate destiny.
Who is the woman who claims to be his grandaughter?
Who is the sepulchral figure in robes of night?
Which path should Hannibal's army take to Rome?
And on a snowy mountain high in the Alps, the Doctor remembers the ultimate question: What if he and Susan had ever left Gallifrey?"