3. Special Episode in an Upcoming Series
I have to say that I would imagine that if Moffat were pushed enough to do something with the plot line, as it has stayed unraveled, that he would do a special two-part episode, where the Doctor finds Jenny (still played by Georgia Moffett), we have the inevitable explanation of regeneration and why her father is now Peter Capaldi and not David Tennant, and they have an adventure and at the end of the episode Jenny leaves the Doctor, because shes too much like him she cant stand to stay in one place. Im actually incredibly glad that Moffat chose not to bring back Jenny in the series with Matt Smith, because of one reason: Georgia Moffett, who plays Jenny, is only two years younger than Matt Smith. Even with his old soul and how he could easily play a father to a young child, having someone who is the same age as you playing your daughter would have been a bit awkward. What am I saying, Alex Kingston played the daughter of Rory and Amy. Still though, Im glad he waited.