Nintendo has announced via its official Japanese website (translated via Gematsu) that production on the Wii U Splatoon Set and Premium Set has ended. Those were the last two models of Nintendo's last-generation home console still in production in the company's home region.
Back in November, various reports said that the Wii U would end production sometime around the end of 2016. The company denied those reports before ultimately confirming the news that same day. With this announcement, the clock has run out.
According to Nintendo's investor relations page, the current lifetime sales of the Wii U stand at 13.56 million units. That makes the Wii U Nintendo's lowest-selling home console ever, well below the Nintendo GameCube's 21.74 million units.
Sleep well, sweet prince.