No, it is not that dreaded “The Doctor as a young boy going to the Academy” series idea, but a series of mini episodes to be shown on the official website. These mini episodes will be prequels to the new series 6. You can read the official news story about the prequel here.
As luck would have it, both the prequel video and the new teaser trailer are viewable from the US. I guess perhaps this is because the new series starts on the same day in both markets? For whatever the reason for our good fortune, here are the new videos for your enjoyment.
The Prequel Teaser
The New Series Teaser