This is according to Fotosidan:
"On Foto2008 fair, so we talked with Lasse "Nikon-lasse" Pettersson at Nikon English and he can confirm that there is no press viewing the 20th of November."
At the same time someone at dpreview claims to have seen the D3x with a release date of December 1st:
"Hold your breath, it will have a very interesting spec which - now - makes it clear to me why they put on hold the D3 production."
Here is another thread on the same topic.
I still believe we will see the D3x in the next 2 weeks.