Nikon will have a new product announcements this week. US readers will get the official news around midnight EST on Thursday, January 5th 2012. Of course I will be covering all updates online. I expect the Nikon D4 and a new AF-S 85mm f/1.8G lens to be announced. There is a (low) chance that some of the other expected products might be introduced as well this week.
Nikon has scheduled several product demonstrations during the upcoming weekend before the PMA show - expect several major websites to have detailed reports on the new products.
The January 6th event may only be for the press and the actual public revealing may happen later.
The new Nikon products will start shipping in approximately 30 days after the announcement.