Matt Smith, who of course plays the 11th Doctor, has confirmed that he knows what executive producer, Steven Moffat, is planning for next year's Doctor Who 50th Anniversary.
Speaking to the Waikato Times, Matt revealed that he has begun discussing plans for the celebration.
"He was pitching the 50th anniversary at the end of this series and what everything was going to be about and it was... very exciting, no doubt he'll come up with something brilliant because that's the sort of man he is.
"I hope that we mark it in the best way possible and we honour the people that have been in the show before us and we make it as grand and brilliant and inventive and as much an occasion as possible. What [he's planning], I may have an idea, but I can't tell you, I'm afraid."
Matt refused to confirm or deny speculation surrounding an episode starring multiple reincarnations of the Doctor.
"Who knows?" he said. "I think it's an exciting idea. Whether it would be possible, or whether it could ever happen I just don't know, but whatever we can do to mark that 50th anniversary will be spectacular, that much I do know.
"Nothing's set in stone. I imagine there will be a script knocking around [for the 50th special] about Christmas [time] and there we will develop further and shoot it next spring."
Finally, Smith dismissed rumours that he will be quitting Doctor Who in the near future.
"Everyone leaves eventually [but] no, I'm not leaving any time soon," he insisted. "I am coming back for the 50th anniversary. To suggest I am quitting now is wrong."