The problem is that IBM and Sony designed the chip for some very aggressive process technologies that did not materialise in the way the fab boys were expecting. Because of this, we are told Sony is scrambling to get yields up before it has to make them for real, a fast approaching deadline.
Will it get it done? Who knows. Will it be able to make enough to satisfy initial demand? Not a chance. Then again, in consoles, what else is new?µ