Nikon Z8 camera. Has Topaz added this camera to their updates?

Pics taken on my Z8 cannot be opened directly in Topaz AI.

I would say not yet as the camera was only released on 10 May. Check on the LibRAW website for the expected update as Topaz use that library to process RAW files.

I can only process pics from the Z8 if they are converted to tif files first. Annoying.