The BBC have released a Q&A with Matt Smith (the Eleventh Doctor), Jenna-Louise Coleman (Clara) and Steven Moffat (current showrunner) - watch it in the player above. SteeMo reveals that the TARDIS is "as you'll see more spectacularly later, quite a scary place sometimes."
Coming Soon screengrabs
Royal Mail reveals Doctor Who stamps
The Snowmen - behind~the~scenes
The Snowmen - What Did YOU Think?
The New Title Sequence