Doctor Who: Children In Need

We now know what Doctor Who treat we'll be getting for Children In Need thanks to a part of this interview:


DAN: Also, Doctor Who often film a special sketch for Children In Need. Is that going to happen again this year?

RTD: No. No plans this year. We simply didn't have time. I know there are lots of rumours flying about. But no, there's nothing. We'll do what we did last year, and show the opening pre-titles sequence of the next special...

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As I'm sure you'll remember, a while ago Russell T Davies said that they were hoping to produce three Doctor Who Projects this year (Not including the specials) staring David Tennant.
The first one is that David Tennant will be in an episode of The Sarah Jane Adventures.
The second is the "Dreamland" Animated Story.

There had been strong rumours that a Children in Need mini scene would be the third project but now we know it's not.

So what could it be?