Sony going to send out soon the next PlayStation VR shipment to the official retailers of the devices in Japan. Accroding to the information customers can buy their VR device on April 29, 2017 in the official stores. The store list can be found in here:

So if you couldn’t get your PS VR since October but you want one (and you have to money and the PS4 for it) you can try to get one from April 29.