Ok, I see we are wandering around with very few piano discussion, let me rectify that.
I know, we've already talked about this quite a lot.... but there is a "news". Now finally they have their semi-production prototypes ready and distributed to a number of people (before it was only to very close friends in no-comment mode). The plan is to start shipments in the early fall. The price seems to be the upper $3000 which is not bad for a custom-made, small-run thing, but extremely hard to justify for what I understand as a semi-weighted controller of unproven quality. Yet, it's the only one of its kind, so if that's what you want/need, at least for an American household is something that you can make the effort to purchase. The texture of the keys looks very weird on the videos (like they are sloppily painted sheet metal, which I'm sure they are not, but I get that impression).
I really hope this will take off, and I may even buy one if/when the price goes down to $1000 or less and the action is proven at least comparable to similarly priced Y/K/R
https://www.narrowkeys.com/post/describing-the-nk5-5-action
https://www.youtube.com/watch?v=BMozDMRgYLg