They could lie like the others and pick a date but they really did not have control of many factors. Why buy a lens before it is shipping of reviewed? Those who switch brands because someone does not give them specific information that is not knowable seem rather silly, and not very serious about their craft. I have yet to see a brand hopper among the award winners or in the major photo fine art galleries. Personally, I have been very pleased with dealing with Nikon and switched from decades with Canon film and switching to Nikon when Digital was really different between the brands and feel I would be giving up a lot by switching brands. I really do not see any advantage in any of them, Sony is not in the same class of build quality, not even built as well as a D3400, Canon would require a $40,000 investmentt in RF lenses, S1R Panasonic is a very well made unit but weighs more than a D850 with grip, a real brick. None of them have the handling and ergonomics of the D850 or Z6/7
international shipping has so many variables in transit and shipping, right now. The shut downs started in Janurary.. Heck I have not even been out of the house but twice in 3.5 months with quite a few session cancellations and weddings, and an international event I was contracted to shoot . I have a good friend who is well positions in customs and said the entire world is bottlenecked do to custom clearance being more complicate now, and unless essential supplies, many shipments are sitting in customs warehouses while higher priority items are tested for contamination. In my main business, Ihad to refund $625,000 in prepaid tours and had already laid out $74,000 in pre-payments for non-refundable tickets to museums and palaces. Now the very next income will be over a year from now so I have a hard ttime generating much anger over a delayed lens. Even if the shipment was yesterday there is no telling when a dealer would get it because most services in many countries are still closed. Get your money back and go out and shoot with your other lenses until you can get a 70-200 S in your hands. Some times it is just better not to sweat the small stuff.
I was planning on getting one but when the specs for size and weight were firmed up, my enthusiasm has fallen. It might be a stellar lens bit it is bigger and heavier than a FL version thatis excellent. What I use it for, portraits and events no one could tell the difference in prints from that or a Tamron G2 at $1500 lower price and more compact. The difference in optics only might be better in corners over a F mount and for studio, portraits and events the resolving power of the corners is not a selling point. Stopped down, where corners mean something, there is not much difference between any of the later 70-200 2.8. The f/4 version is lower cost, very good and not a challenge to the weight limits for overhead bins on flights.
The main reason I switched to the Z system was the inceasingly more limits on carryon weight regional airlines that I could not take my D850 and a few lenses, without buying an additional seat. My last month-long visit to Turkey required leaving my FX cameras home and taking a D7000 amd kit zoom. But still got some good shots with creative use of a SB900
Here is one done in cave of my GF who want to dress the part, showing even a D7000 crop camera with 18-105 kit lens can get the job done in a pinch. A thousand photos over a month in snow and ice covered mountains to new years eve street party, -15c to +4C, all shorts of clighting conditions and not one out of focus shot or badly exposed. The only ones deleted were due to my framing and composition. so even the Dx kit lens was better than I am.