Nikon will be suspending production of some accessories on February 6th. The accessories involved are: MC-21A Remote, MC36A Remote, DG-2 Magnifier, and SD-9 External Power Supply for Speedlights.
It appears that these are products that were produced by facilities that are being closed in Nikon's factory consolidation. It's unknown whether and when these products will begin production again.
Nikon also is closing two small lens production plants in Japan to consolidate lens production at a single plant. I don't expect the lens manufacturing changes to have any impact on which lenses continue in the lineup, or even ongoing supply in the markets.