At the San Diego Comic Con they showed trailers for The Waters of Mars and The End of Time. The second one isn’t very clear, but it’s the best copy I could find.

The Waters of Mars (later this year)

If you can’t see the embedded video above, please click here.

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The End of Time (Christmas 2009)

If you can’t see the embedded video above, please click here.

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Finally, if you just can’t wait for new Doctor Who, then check out the free online short story Blue Moon that was written to commemorate the 40th anniversary of Apollo 11 landing on the moon. Click here to read the prologue.