I don’l think that Jenna-Louise’s role is going presentation for Doctor Who fans: she was announced to appear in Doctor Who Christmas Special episode but she first appeared in the first episode of series 7, Asylum of the Daleks. If you stayed tuned to the new you know all the details.
In the new issue of Entertainment Weekly Jenna-Louise Coleman talks, exclusively, about keeping her role in “Asylum of the Daleks†a secret and when fans might get some answers with regards to the Oswin/Clara conundrum. Durint the interview that can be found here the actress discuss about the forthcoming Doctor Who Christmas show and reveals where Karen Gillan recommends you should eat next time you’re in Cardiff.
The interview can be found here.