The year’s Doctor Who Christmas Special’s title has been confirmed to be The Time of the Doctor, keeping the theme going for the past couple of episodes (The Name of the Doctor, The Night of the Doctor, The Day of the Doctor).
Here is the synopsis from the BBC:
Orbiting a quiet backwater planet, the massed forces of the universe’s deadliest species gather, drawn to a mysterious message that echoes out to the stars. And amongst them – the Doctor. Rescuing Clara from a family Christmas dinner, the Time Lord and his best friend must learn what this enigmatic signal means for his own fate and that of the universe.
You also have the 10 second teaser trailer for the special, along with a high resolution version of the previously released promo image. (Check out the patched up Cyberman head)