Sony has officially announced plans to fully discontinue shipments of the PlayStation Vita in Japan this year, a statement which came a couple of months after they had announced the discontinuation of game cartridge production for the system. Now, as of March 1st 2019, the official pages for the remaining 2 models which were being produced, the PCH-2000 ZA11 (black) and PCH-2000 ZA23 (aqua blue), have been appended with the statement "shipment ended", now meaning that no further systems are being manufactured at all.
The Vita was launched in December 2011, enduring a fluctuating amount of praise and support until it was gradually abandoned by Sony and major AAA title developers in just a mere few years. Fortunately, the flourishing amount of third-party support in which the Vita had gained over the years just showed how spectacular the system could still be in the current generation.
Source: PlayStation Japan - Vita Product Line-up