A reader contacted Viltrox to find out when the new 135mm f/1.8 LAB lens would be available for Nikon Z mount. The response was that Viltrox currently does not have plans for a 135mm f/1.8 LAB lens for the Nikon Z-mount:
I find this strange becuase initially, the lens was rumored to be released for Sony E-mount first and later for Nikon Z-mount:
Additional coverage of the Viltrox 135mm f/1.8 LAB lens can be found here.
Sample photos from the Viltrox 135mm f/1.8 LAB lens can be downloaded here.
In the US, Viltrox lenses are sold at Adorama, B&H, and Amazon. International shipping is available at Pergear and at the Viltrox store (you can get 8% off at the online store with code NIKONRUMORS).