Last night, in his Hugo acceptance speech, Neil Gaiman mentioned some exciting news: He's writing a second Who episode. In fact, he mentioned that only a fool or a madman would attempt to write another episode of Doctor Who after having pleased people so much the first time around — so he's on his third draft of a new episode now.
We caught up with Gaiman at the Hugo afterparty, and he told us more about this surprising turn of events. Apparently the new episode is slated for the second half of season seven, which means that it could air as soon as spring 2013. But Gaiman pointed out that "The Doctor's Wife," his Hugo-winning episode, was originally slated for season five and got bumped to season six for budgetary reasons. The same thing could easily happen to his new episode, he said — and it sounds like this is another super-expensive story to make. Fingers crossed we get to see it sooner rather than later.
Source