From the Nikon website:
Development of nikkor Z 800mm f/6.3 VR S, a super telephoto single-focus lens compatible with nikon Z-mount system
December 14, 2021 PRESS RELEASE/Press Release
Nikon Co., Ltd. (President and CEO: Toshikazu Maate, Minato-ku, Tokyo) is developing nikkor Z 800mm f/6.3 VR S, a super telephoto single-focus lens compatible with full-size (Nikon FX format) mirrorless cameras using Nikon Z mounts.
"NIKKOR Z 800mm f/6.3 VR S" is "S-Line"※In addition to high resolution, it is a lens that enables powerful depiction by thoroughly suppressing color dents. For the first time, a PHASE FRESNEL (PF) lens that enables compactness and weight reduction has been adopted as a NIKON Z lens, and it has excellent portability even though it is a super telephoto lens. High drawing power and mobility support shooting from high amateurs to professional photographers.
nikon will continue to pursue a new level of optical performance to meet the needs of its users. we will also contribute to the development of video culture with the aim of further expanding the possibilities of visual expression.
Z 800mm f/6.3 VR S in development
Moderator: Stany Buyle