I just came back from photo exhibition and I managed to grab my hand on the new D3s.... and it's really amazing. Fully usable iso up to 6400 straight from camera, 12800 with a little bit PP. Hi3 mode usable for artistic use only :) - looks great in B&W - the grain is awesome that way.
I've also managed to play with the new Sony a850 and... well it fits nicely in my hand but it's soooooo slow with the new 70-400/5.6 - definitely it's not a low budget way to go for FF (at least for those of us who need fast AF).
I've also had a little chat with Nikon representative and he said that it's unlikely to see a new d700x by the end of week, although he didn't said anything about d800. Also no long range lenses to be released by the end of this year. However, he said that Nikon is realizing the need for new 400/4 lens and replacements for 80-400 (more likely this range rather than 100-500/5.6) and 300/4 with VR.
As for the availability d3s and new 70-200/2.8 should be in stores by the end of November.