The company only managed to present second-generation developer kits to the general audience and the showcased product was just an empty case.
The Cell processor yields are rumoured to be terrible and Sony is looking for different ways to be able to improve the product in order to be able to launch it in mid-November.
In fact, our source claims that "Sony does not posses a magic wand" and that slapping the GeForce 7900GT was an error, since it would take approximately same amount of time to make a dedicated GPU for the cause. The error part is pretty way off-balance, but don't shoot the messenger.
The source claims that the fall launch is just hitting Christmas with a number of titles, but with real console unavailability (can you say: paper launch?), which is guaranteed to piss distributors off and just about turns a lot of the market to the Microsoft side. Real availability is expected at the mid Q2 2007, right about the time of E3 2007.