https://www.cnet.com/news/nikon-full-frame-mirrorless-camera-online-teaser/

In early July, rumors swirled about potential full-frame mirrorless cameras from both Canon and Nikon. Yesterday, an online teaser video posted by Nikon Europe suggests that at least one may be on its way soon.

Entitled "Travel of Light," the video depicts rays of light blasting away to form a photo of a person looking upward (check out the video at 0:36 seconds for some full Bifröst action). The video description also links to Nikon's relatively empty landing page for this campaign.