According to the NR, the upcoming Nikon 1 J5 mirrorless camera is rumored to have 4K video recording.
The Nikon 1 J5 will be announced next several weeks with Nikon D7200. If the rumor is true, The Nikon 1 J5 will be the first Nikon camera to have 4K video recording feature.
Stay tuned for more info.
Read More: Nikon Rumors