No, they're just a little desperate and retailers are pissed at them.
Having absolutely no product available will do that, so Sony broke their own street date and is shipping them as they make them.
There may well be a shortage this holiday as retailers, at this point, already have a lions share of there holiday hardware purchases.
NOTE: Xbox is in a bit of a similar crunch as I've heard that stores are very low and are waiting for their holiday bundle.