I have been holding off this post for few weeks now, hoping to get some additional information. Well, I did not and since it has been very slow on rumors, I decided to post this anyway. As of today, take it with a grain of salt:
I received a tip that Nikon is working on a new D810s camera that should be announced soon (in the next few months). I do not have any details or specifications, but I am guessing that compared to the D810, the new D810s will have a better high ISO performance and maybe few other improvements. It seems that Nikon is not yet ready for a big jump to a D850/D900 camera which explains the different D8xx variations (D800/D800E/D810/D810A/D800S). They also know how to "squeeze" better ISO performance out of existing sensors, so a D810s makes sense given the current "wait and see" approach.
Cosina Japan announced the discontinuation (end of production) of the following Zeiss lenses with Nikon F mount (the ZF.2 models are currently up to $300 off):
Most of the discontinued focal lengths listed above are already replaced by the new line of Milvus lenses for DSLR cameras (21mm f/2.8, 35mm f/2, 50mm f/1.4, 50mm f/2, 85mm f/1.4 and 100mm f/2).
The following Zeiss lenses are getting a price increase in Japan on October 18th:
The Nikkor 200-500mm f/5.6E ED VR lens is currently in stock at BestBuy. There is no way to verify if this batch is affected by the latest AF issue, but BestBuy has a pretty good return policy (you can also ship it to your local store for pickup and decline the purchase after you check the serial number).
Check also availability at:
B&H | Adorama | Amazon | Amazon Germany | Amazon UK | WEX | Calumet.
Nikon 200-500mm f/5.6E reviews:
RoyMangersnes | feddestudios | jesuise | digineff | iamnikon | dcwatch | shottobits | cameralabs.
Nikon filed a new patent in Japan for a 1 Nikkor 10-30mm f/3.5-6.3 VR mirrorless lens (for 1" sensor). There have been several Nikon 1 lens patents in the past few months:
DxOMark published their test results for the Tamron SP 15-30mm f/2.8 Di VC USD lens for Nikon F-mount ($1,199.00):
Today Nikon issued a new service notice for the Nikkor 200-500mm f/5.6E ED VR - lenses with a serial number under 2008365 will need a firmware update in order to fix a confirmed AF issue:
Update: in the US Nikon will cover the shipping and handing to and from the service facility.
There is a known issue that it seems was not fixed in the latest update for Lightroom CC 2015/Lightroom 6 - tethering Nikon cameras is not working on El Capitan OS: