I recently inquired to Nikon re the pixel issue and below is the reply
What are thoughts on having to Firmware update a brand new out of box unit,
HI
We have received reports from some users of the Nikon D7000 digital SLR camera regarding the occurrence of noticeable bright spots with movie recording under certain conditions.
Nikon believes that these bright spots are not normally noticeable, and therefore do not indicate a problem with practical use. However, with further investigation of the reports received, we have confirmed that bright spots may be noticeable when recording movies of especially dark scenes or subjects.
In order to provide our customers with better products, Nikon is currently preparing to release a firmware upgrade with measures to reduce the occurrence of these bright spots for the D7000. We hope to have the firmware available before the end of the year.
Of course at high ISO settings, extreme conditions or slow shutter speeds you may continue to see bright spots in some movies and still photos. Please see:
Answer Title: What are defect pixels?
Answer Link:
What are defect pixels?
If you see these spots under "normal" shooting conditions the camera can come in to be checked and possible recalibrated. However, these spots can be caused by environmental issues and may come and go over time, though.