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The official Doctor Who twitter confirmed that this year's Christmas special, "The Snowmen", will air on Christmas day at 5:15 pm on BBC One. (9pm on SPACE in Canada and BBCA in the US.)
Today, BBCA released about 40 new stills and promo images.
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Image may be NSFW.
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Image may be NSFW.
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Character promo images:
Image may be NSFW.
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Image may be NSFW.
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Image may be NSFW.
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Image may be NSFW.
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Episode stills:
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Image may be NSFW.
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Image may be NSFW.
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Image may be NSFW.
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Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Last Saturday, BBC released a new interview with new companion Jenna-Louise Coleman talking about how she landed the role.
Source for the stills, source for the video, source for the tweet
Believe it or not this isn't even all of the stills or promos, so there's more at the source. I tried to pick only the ones that were marginally interesting/not of random children no1curr about.