The Z system optics are on target. This trio of fast Dragons are arguably the best made to date: Not only superb optics in their own right, but especially with the flexibility enabled for filters on the 14-24, and TCs on the 70-200. Collectively, Nikon have also pruned the net weaight of the set
https://www.zsystemuser.com/nikon-z-system-news-and/the-2020-z-lens-lineup-is.html
I'm yet another also watching and waiting for the 2nd gen of Z cameras. At minimum, if they are going to sell for wildlife, these must match : (1) capabilities of a D850 ie at least the AFC prowess of the D5 AF engine: even better if AFC is closer to the D6; (2) the Z6s/Z7s must have a grip (ie taking ENEL18) and (3) above all, pack the full house of Custom Menu options. All for the better if Nikon add more Fn/AF buttons to match the D6, and equally options to exploit Recall Custom Functions etc. [Brad Hill posted a more complete list recently]
WRT optics, these Z system engineers are fairly explicit about Nikon's priorities in this interview, published in March. The 2nd part is mainly about the 58 f0.95 Noct but includes a couple of telling snippets. A couple of intriguing hints about extending the diversity of Z Nikkors, which exploit the optical advantages of the new mount.
大口径マウントの「NIKKOR Z」開発秘話（前編）
dc.watch.impress.co.jp
大口径マウントの「NIKKOR Z」開発秘話（後編）
dc.watch.impress.co.jp
Clearly, this younger generation of "lensigneers" have their act together (pity about Nikon marketing!).
Once we have the 24-105 S, it should pair rather well with the 14-30 f4S for many wildlife photographers (travellers too). We also have the compact 24-200 f4.5/6.3 in the Z system, which is the closest upgrade to the excellent nifty 28-200 G [AFD], which is still the smallest FX made in its class. I use this as the main kit zoom on my D780.
The 100-400 S will be a keystone lens for wildlife. It is probably going to cost a rather large chunk of £3k! If it's only f3.5/5.6 then it would probably be better to use the 70-200 f2.8S with TC2-Z. As the feedback is the new Z-Nikkor TCs are excellent. Far better if we have the option of a 100-400 f4S, which could manage on 105mm filters, but a rear internal will be ideal (as in the exotics). As with the 500 PF and 200-500 etc, the hood blocks access to a CPL. (Nikon messed with the huge front filter! The showstopper on the otherwise excellent 120-300 f2.8E, it's useless in the tropics, and for water sports etc .)
www.nikonusa.com
