Nikon's new Z9 firmware update brings a ton of photo and video enhancements that are so substantial they could have constituted a new camera.
Z 9 Firmware 3.0 Upgrade to Unlock New Features
Nikon Z9 Update is So Big, It Could Have Been a Whole New Camera
Nikon Z9 review: Speed, resolution and 8K video power
Nikon Z9 update pushes it ahead of Sony and Canon flagship rivals
Nikon Z9 review: a DSLR-like stills/video monster: Digital Photography Review
My Video-Focused Firmware Wishlist for the Next Update to the Nikon Z 9
Nikon Z9 firmware v4.10 promises improved birding performance, Z8 users have to wait: Digital Photography Review
I Sold My Nikon Z9 - Jason P. Odell Photography
Major Nikon Z9 Firmware Update 2.0
Nikon Z9 review: power tool
Nikon Z9 FIRMWARE 3.0 : 4K Hi-Res Zoom , 60FPS For Photos and More!