There is a release candidate for Camera Raw 8.7 that includes support for the camera. However, Lightroom does not use the Camera Raw plug-in. It is expected that support for the camera will be in the next Lightroom update, whenever that is released. But there is no release date because Adobe never announces that kind of information ahead of time. In the meantime, you could use the software that came with the camera to create TIF copies that could then be opened in Lightroom that you have now. Or, you could download the DNG converter 8.7 RC and create DNG copies that you could use now.
nikon d750 camera raw 8.7 wrote:
I see everyone is having the same problem
So you should have been able to see the same answer everyone else gets: