Japan sales (Week 15): Media Create/Famitsu/Dengeki - April 9 - 15, 2018

[thismeintiel]

There are only two reasons for the supply issues that I can think of. Either Sony is seeing a sudden increase in demand in other regions, so they are focusing supply to those. Or Sony is coming out with a slight redesign to cut costs, either to increase profit or in preparation for a price cut.