My Nintendo Japan has announced that they've completely sold out of the Switch. This includes all options for the system, which is certainly not a good sign. Nintendo has said that the coronavirus was going to cause hardware shipment issues in Japan, and this sell-out might be showing the impact of that already.
We have no word on what the stock for Switch hardware is like at retailers in Japan, nor do we have info on when to expect at My Nintendo restock. As of right now, just the Switch Lite is available via the My Nintendo Store.