As previously reported, the new Nikon Nikkor Z 28-75mm f/2.8 lens is now in stock at Adorama and Camera Canada.
Check also lens availability at B&H, Amazon, Calumet, Koch, Erhardt, and WEX – they should get it in the next few days.
Previous coverage of the Nikkor Z 28-75mm f/2.8 lens can be found here:
Nikkor Z 28-75mm f/2.8 lens additional coverage (the first Tamron lens for Nikon Z-mount)