[mst]

Will that be a 85mm f1.2?

The rumor mill believes so, because the fast 50mm prime is f/1.2, too.

---

I'm rather baffled that Nikon didn't release any super tele lenses so far. Canon showed that the engineering efforts for optimizing legacy lenses can be very low.
There's barely any difference in size between mirrorless and DSLR super tele lenses anyway.

I assume the two big guns will be announced alongside the Z9.

Nikon could probably just put on a different mount, like Canon did. But I assume they might use the opportunity for a redesign to catch up in the weight department. The latest Canon 400/2.8 (EF or RF) is hand-holdable if required, for example. That's almost impossible with the AF-S 400/2.8 FL VR.