According to the document, Nikon has received reports from some customers of bright spots visible in shadow areas of video recordings captured with the Nikon D7000. While suggesting that the problem isn't a major issue in general usage, Nikon states that it is preparing a firmware update for the D7000 that should mitigate the issue for those customers who are experiencing problems.
No information is available as to when the new firmware update will be delivered, so keep an eye on our news page for more on this story as it develops.