A reputable list has a posting of what the poster believes to be the Japanese price for the D3x:
…898,000yen. [ed: That's $9,431.69 per Google today!]
Whoa, that’ quite a bummer. Basically as of today I could buy 4.5 D700 with a resolution of together 54MP for the price of one D3x.
I guess this prices translates [...]

From a reputable list:
Subject: Re: Nikon pro mag
Date: Sat, 29 Nov 2008 01:09:05 +0900
I phoned Nikon UK earlier today and they said that although they cannot give any information yet, to phone on Monday when they should be able to reveal all.
Apparently the magazines should have been sent out on Saturday so that they would [...]

Reportedly from Nikon Pro magazine (Euro? Note the British spelling of “colour”, etc), supposedly NOT fakes (click for larger images):
Confirmed. Not Fakes. (click for larger images)
Summary
So what are we looking at- basically a FF D2x sensor in a D3 body– should make the landscape and studio guys happy, I’ll stick with my amazingly good high [...]

This is an interesting bit of info from a reputable Nikon list:
It must be 2 or 3 years ago that I heard from somebody who shot an early prototype of the D3x and what he told me about the details he saw in the images made me want one. The camera itself was actually scheduled [...]

[11/28 Nikon Pro D3x shots and info]
There are shots (likely real) of the new D3x along with a wad of info in this post.
[/Update]
[11/27 Price Update]
From a reputable Nikon list:
A friend of mine was in a Kansas City Camera store last week and was told approximately $7500.00.
[/Update]
Ok- we know that “Something BIG” has been announced.
Speculation [...]

The Bangkok Post (”All the news that’s fit to print”) reports that Nikon has laid off 1,500 contractors due to reduced demand: Japanese camera-manufacturing giant Nikon yesterday laid off 1,500 of its subcontracting staff in Ayutthaya province after a slump in orders due to the global financial crisis.
…
All the dismissed workers are under subcontracts and have [...]

We’re seeing more and more rumors flying about a high-res d3x or d4 or whatever other name. Here’s one from some guy who seems particularly sure:
D3x will be launched officially on the local market on december 1st, this year. 24mp, FX (of course). I just had the chance to see and play a bit with [...]

Red finally came out with details on their Digital Stills and Motion Camera (DSMC, as opposed to DSLR) cameras. How long has the “modular” Nikon body rumor been around? I’ve even seen reports from pro’s saying that the thing actually exists, but Nikon keeps it under wraps. What a shame we don’t see things like [...]