While retailers are already taking pre-orders for a second wave of PS4 units that are expected before the holiday, Sony has apparently been holding a number of units back so that those without a pre-order still have at least a chance, slim that it might be, to purchase a unit off the shelf on launch day.
It is not clear what kind of additional allocation of units Sony has given to GameStop beyond their pre-order units. It is said that buyers should also check www.gamestop.com for availability of PS4 units throughout launch day which is November 15th in North America.