Christmas Special Filming to Start Next Week?

There has been no official announcement from the BBC as to when the Christmas Special will begin production. At the Cardiff premiere of Deep Breath, the cast did say it would start as soon as the World Tour ended. So far, it's been a couple weeks and there's been nothing. Yesterday afternoon, director Paul Wilmshurst tweeted that he was "back in the bay" and that there was "a week to go." This would indicate that at least pre-production is scheduled to begin next Monday. Twitter rumors seem to indicate that filming will begin sometime this month.

Back in the Bay. Another adventure beckons. A week to go. Fingers crossed. pic.twitter.com/opleYFGXPJ
— paul wilmshurst (@PootleFly) September 1, 2014