Focusing of AFD Nikkors in L'view on the D850 and D780 works - Nothing more to add IME. This is using 85 f1.4AFD, 28-105 AFD and 70-180 Micro-Nikkor. The D780, as we all know, is built around the Z6 sensor. [I've read somewhere, that some years back, Sony included s'driver AF support in an adapter.]
Far more pertinent is the release of Fringer's new NF-FX adapter. It supports AFD Nikkors fully (ie it supports 'driver AF) on Fuji X MILCs. When we acknowledge their older EF-NZ adapter also works well on Nikon Zeds, this confirms their engineers not only rvs engineered the Z AF successfully, but they continue to upgrade the firmware for this adapter. Priced at $324.00, the Fuji adapter is slightly more than the EFNZ ($300) plus shipping. A no brainer if one needs to use even just one favourite AFD Nikkor.
https://www.fringeradapter.com/blog/fringer-nf-fx-smart-adapter-is-releasedThus, Fringer possess both "sides" of the code etc for a fully functional NF-NZ. This would fix what's missing in the FTZ. And including EXIF data with AI/AIS Nikkors cannot be difficult. 3rd party extension rings (eg Kenko) do this (+ G and E support).
Much ink has been split, justifying a "FTZd"; it is strange how forum posts on the question catalyze negativity and worse. Those no longer using older F-Mount lenses can ignore any such adapter (as just another Accessory). Nikon's neglect of their installed user base must rate as one of the company's biggest strategic blunders with the Z System, by alienating so many loyal clients. Only recently, Nikon did officially discontinue the latest cohort of AFD lenses. Arguably, a FTZd would have sold Nikon a pile more Z cameras, and further at least some of these new owners to try Z glass.
How ironic should Fringer show up Nikon! But perhaps Thom sources are correct and we will hear something soon