This pretty much speaks for itself.
And what it says is “Christmas”.
It was premiered on The One Show tonight (which explains the ’1′ on the right hand side, but not necessarily in the way you’d think). UK viewers can watch the show via iPlayer. Matt Smith and Karen Gillan are guests and you’ll also see a report from The London Film Museum and (say the Daily Mail) one host staring deep into the cleavage of the other. Like so:
UPDATE 1: And here’s an excerpt that will play outside of the UK.
UPDATE 2: The image is now in much better resolution, having been replaced with an official version (without the station ident and countdown 1 graphic) released by the BBC Press Office.