Any time within the next 5 years?
Anyone who knows isn't saying anything, and anyone who is saying something doesn't know.
You can be sure that Nikon is aware of its shortcomings on FX format, and the addition of VRII and Nano coating would also make sense. But who knows where it falls in their list of priorities?
Nikon have been busy updating their lens lineup over the last few years, but there is still a way to go. We now have a complete set of VR superteles, although the first of these lack nano coating or VRII. I guess at some point we may see "II" versions of the 300VR, 200VR and 200-400VR with these new features.
We have several new special purpose lenses, including new tilt-shift lenses, and two macros. That still leaves the AF 200/4 micro to be upgraded to AFS and possibly VR.
We have two new fast zooms in the 14-24 and 24-70. You could say the 70-200VR was the first of the wave of new lenses, but it's already getting a little old and it has shortcomings as we know, so it will be due for an upgrade at some point.
The DX lineup is pretty well filled out with consumer zooms and three professional lenses: 10.5 fisheye, 12-24 and 17-55. Although not perfect, Nikon probably feels these are good enough for now.
That leaves the wide, standard and smaller telephotos. This is the category in most urgent need of updating as these are all old designs. There have been plenty of rumors/wishlists of an AFS 50/1.4, AFS 85/1.4, 300/4 VR and others. I suspect we will see something here soon.
Now that the FX format is becoming more common, we may also see new slower zooms appear, along the lines of an improved 24-120VR or the old 28-105 macro. Also add a new AFS 80-400VR to this list.
Nikon keeps pretty quiet about new products, we'll only know what appears closer to time they are announced.