Nikon updated their Z lens roadmap with silhouettes of upcoming Nikkor lenses - Nikon Rumors
Nikon Z Lens Roadmap (Updated April 2023)
Nikon Z-mount Lens Roadmap in 2023 - Camera News at Cameraegg
Nikon: NIKKOR Z Lens Roadmap is Updated (2019-01-07) for the Next-Generation Nikon Z Mount System's Full-Frame (Nikon FX Format) Mirrorless Cameras – Photoxels