President and CEO of Sony Computer Entertainment of America Jack Tretton was recently interviewed by Forbes, where he hinted the PS4 may hit a shortage.
He states, "I certainly think, given the technology that we're offering, given the software lineup, given the price point we have, that we'll have consumers interested in excess of what we're able to manufacture."
He is the second Sony executive to predict the shortcoming, and it has been assured that the first shipments will eventually sell out. Sony has been very good at marketing their next-gen console, considering that pre-orders for the PS4 keeps getting better. It seems the best way to be guaranteed a PS4 for the upcoming holidays is if people start reserving them now.