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.
Nikon Z9 Firmware 2.0 Update First Look with Seth Miranda
RED Suing Nikon over Video Compression Patent with Z9 2.0 Update - Newsshooter
Nikon Z 9 Firmware 2.0: Top Features For Photographers
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Nikon's Fourth Firmware Upgrade for the Z9 Camera Adds Bird Detection
Nikon released new firmware updates for the Z9 camera and Nikkor Z 20mm, 24mm, 35mm, 50mm, 85mm lenses - Nikon Rumors
Major Nikon Z8 firmware update version 2.00 released - Nikon Rumors
Why The New Nikon Z9 Is a Big Problem for Canon (and Sony)