I don't think it will be soon.
When Canon decided to design and eventually manufacture digital bodies, they considered making large aperture lenses (primes) in the 1.2 bracket. They totally redesigned their lens mount and made it bigger, thus you cannot use older canon lenses on newer bodies. As long as Nikon uses their F mount on bodies they manufacture, it maybe quite some time that they will be making one. One advantage of the F mount is that we can use older lenses (AI-s, D) on our new bodies. There is a 50mm F1.2 manual lens that we can use actually. But I have not heard nor seen one in the 85mm. The 85mm 1.4 is already a performer, the newer 85mm1.4 G looks promising too, minus its SRP!