The first price drop comes from Japan - 762,800 Yen down from 799.000 Yen (source).
Cameta Camera is selling Nikon D3x on eBay for $7479.95 - (buy now price, US warranty, free shipping).
RobertsImaging was selling the D3x for $7495, but now they are out of stock:
There is also a price drop in Switzerland. While most resellers ask CHF 11.998 for the D3X, there is one selling it for CHF 9580.00 (or 9388.40 if you pay in advance).
I believe we will see a D3x price tag below $7,000 by March of 2009.