There is still a chance that is only in the Japanese market. Some people have confirmed from Nikon USA it is still shipping in mid march here. Perhaps pre-orders are weak in Japan so they are sending the allotment here to fill the demand first. Of course perhaps it is delayed to prevent a recall before it's shipped? Maybe they are already re-branding them as D510 so people think they have resolved the issues of the D500

Or perhaps they rushed the announcement to stop the bleeding to Canon when the 7Dm2 hit 1050 with the pro printer after rebate last month...