Popular Photography & Imaging speculation:
"The D3 and D300 knocked us with a one-two punch. So we predict that rather than try to top those cameras, Nikon will likely upgrade the D80, bumping up the sensor to 12MP and adding Live View, and keeping the price down to under $1,300."
Related posts:

One Comment
There’s an important note there:
“With no Non-Disclosure agreements signed, and no top-secret meetings scheduled with camera companies”
That means Nikon won’t be announcing anytime soon. I’m not sure how long the standard embargo is, but it’s gotta be at least a few weeks.