Next episode (The Girl Who Loved Doctor Who)

In a parallel universe, a new episode of the television show Doctor Who was being filmed by 2013, written by Steven and starring Matt Smith as the Doctor.

The story was about the Doctor landing in the "real world". Matt Smith divulged this much information to the Eleventh Doctor, who met Smith at Doctor Who Con 2013 after landing in this universe: Smith, who believed the Doctor to be a cosplayer, remarked that a scene just like this meeting should be in the episode, and that he'd ask Steven to write it in. (COMIC: The Girl Who Loved Doctor Who)

Behind the scenes
The "upcoming episode" is evidently intended to be The Girl Who Loved Doctor Who, the very story in which it's mentioned. In one of the few obvious differences between this meta-fiction universe and the real world, however, the story is a television story as opposed to a comic.