A new batch of Nikon NIKKOR Z 180-600mm f/5.6-6.3 VR lenses is now shipping in the US. The current shipment from B&H is for pre-orders placed in November 2023.
Check the US 180-600mm lens availability at Adorama, B&H Photo, Amazon, Paul’s Photo, and Service Photo.
I find it strange that the 180-600mm lens has been in stock in Canada and Europe for a while, but it is still heavily back-ordered in the US: Camera Canada, Foto Erhardt, Foto Koch, Calumet, and WEX Photo,
Other US buying options:
Previous 180-600mm lens coverage can be found here.
Nikkor Z 70-180mm f/2.8 and 180-600mm f/5.6-6.3 VR lenses additional coverage
Nikkor Z 180-600mm f/5.6-6.3 VR vs. Nikkor Z 100-400mm f/4.5-5.6 VR S specifications comparison
First Nikkor Z 70-180mm f/2.8 and 180-600mm f/5.6-6.3 VR lens reviews