If you didn't get the chance to see the Doctor Who Christmas Special, or if, like me, you haven't been home for Christmas and are waiting on the DVR, the BBC have put the metaphorical money shot online.
It doesn't reveal any plot elements, nor the how and the why of Eleven being terminally injured. But it does give you a taste of Twelve, allowing for ample speculation about next season.
If you've seen the episode, please don't post story spoilers below - there's a separate thread for that. But you're welcome to post speculation about Twelve based on this minute alone.