It seems that Thom Hogan now also believes that there will be a new Nikon announcement by the end of this month:
“There’s a pattern that happens prior to a real Nikon launch. I’m seeing that pattern again and we already know about a 11/20 date for something being launched.” (Source)
and another one from jeff-c (for detailed history on jeff-c’s predictions click here):
“Entering quiet period until Dec. 1st” (Source)