The fantasy author hinted at Sunday night's (September 2) Hugo awards that he was drafting a new instalment, following the success of his 2011 episode 'The Doctor's Wife'.
Gaiman told io9 that he is indeed working on a new Doctor Who script, currently scheduled for 2013.
However, the award-winning scribe added that his episode may yet be delayed, just as 'The Doctor's Wife' was shifted from series five of Who to series six for budget reasons.
The first half of Doctor Who's seventh series is currently airing on BBC One and BBC America, with the latter eight episodes - featuring new companion Jenna-Louise Coleman - to follow next year.
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Watch Neil Gaiman discuss his work on Doctor Who with Digital Spy below:
Photo gallery - Doctor Who 'Dinosaurs on a Spaceship':