Well it seems that reports are coming in from Japan that the first day hasn't really been the blitz people might have been expecting and stores have plenty of stock available for walk in customers.
A few possible scenarios have been mentioned. 1. Most people ordered the system online since just about every online store has sold out. 2. Sony have released a lot of stock to ensure there is ample supply during the coming period that they restock the West. 3. People just aren't buying yet.
Either way its only the first day and the numbers won't be released until Monday. I'm interested to see how they sells and how it effects Japanese devs