The extent of the issue is still not known , but so far Nikon has advised that all cameras produced from July - September 2014 and models from July 2015 to September 2016 could also be affected , this means that the chance of your camera being affected is pretty high unless it was produced in a later batch (no reports from post - September 2016 batches yet) . The issue , which is reported to have been addressed first on the 9th of July 2017has now expanded to add the above mentioned production years .You can also search if your camera is affected by this recall by typing the serial number here Link to U.S repairs .
So what is this issue about , well for starters , the flare issue (internal reflection issue has around but wasn't a major concern (Nikon did recall the model though) , but now the issue is with the shutter as it creates shading in images .This is a serious issue as black bars while in use indicate that serious production issues exist with the company responsible for the mechanism . Currently all models sold will be covered but if you purchased your model from a cheap Grey market dealer , it will basically be a game of Russian roulette if your model has an issue . So if you are a potential buyer (I'm a Nikon user myself and I was to buy one myself this August ) its advisable to bite the bullet and buy the D810 when prices go down (or a D500 if you don't mind the crop) or wait till the smoke clears to see what happens next (who knows, Nikon might launch a new camera too).
LINK TO SERVICE ADVISORY NikonUSA
Written by Rakitha for MasHD
Sources - Nikonrumors(Jul9) , Nikonrumors(jul13)
Technical Service Advisory for users of the Nikon D750 digital SLR camera
Thank you for choosing Nikon for your photographic needs.
In February of 2016, we announced in an update that the shutter in some Nikon D750 digital SLR cameras manufactured between October 2014 through June 2015 may not function normally, sometimes resulting in a shading of a portion of images. Since that time, we have learned that the same issue may affect D750 cameras manufactured from July 2014 through September 2014 and from July 2015 through September 2016.
For those who have already purchased a D750 and would like to have their camera serviced for this issue, free of charge, Nikon service centers will service cameras as indicated below. We sincerely apologize for any inconvenience this issue may have caused.
Identifying affected D750 cameras
To check whether or not your camera may be one of those affected by this issue, click the Check Your Serial Number button below and enter your D750's serial number as instructed. . If your D750 camera is one of those that may be affected, instructions for obtaining service will be displayed. If your D750 camera is not one of those to which this issue may apply, rest assured that service to your D750 camera as to this issue is not necessary and you may continue using your D750 camera without concern for this issue.
The camera's serial number is the 7-digit number indicated by the red frame in the image above.
If your D750 camera may be affected, as confirmed with the serial number check above, you will be provided with the necessary information to obtain service for this issue free of charge. Once your D750 camera is received by Nikon, your D750 camera’s shutter will be examined and replaced, and your D750 camera returned to you free of charge, even if your D750 camera warranty has expired.
We sincerely apologize for any inconvenience this matter may have caused you.
Nikon will continue to take all possible measures to further improve product quality. Therefore, we hope that you will continue to choose Nikon for your photographic needs.