The old 35mm film Nikonos is still sought after, I keep my eye out to snag one on craigslist.
It does seem a little strange that after Nikon announces that mirrorless sales are tanking and that they will concentrate on DSLR's, and perhaps some other new products, this pops up. It sounds great, a little pricey, perhaps, but the price of a underwater enclosure is breath taking, so its probably a good deal.
It does seem that Dr. Jekyll and Mr. Hyde are busily at work over at Nikon, they need to get their story straight about their mirrorless line.
I have to congratulate Nikon for a good step, there is nothing like it!