This isn't really going to hurt the graphical leap from the PS3 to the PS4 at all. The largest R&D cost that came from the PS3 was the development of Blu-ray (to address load issues Sony went with a more expensive 2x drive at launch) and the Cell. However, all of those costs have been dealt with. I think Sony will stick with Blu-ray tech for the PS4, as the costs for drives have dropped incredibly. They will probably go with a 6x-8x drive, pretty much eliminating load times. I also think Sony will go with an advanced form of the Cell CPU, which IBM has said they will continue making chips in the Cell "family." It should also be relatively cheap for Sony to at least go with1-2 GB of RAM in the PS4. In the end, I expect the PS4 to sell for ~$400.
