Nomura has recently been interviewed by Dengeki Playstation Magazine about Final Fantasy XIII and Final Fantasy Versus XIII. The article is all in Japanese which means our google translation doesn't mean anything, but we can pick out a few interesting bits. People on the forums are working on translating it and finding other peoples transations which you can read or contribute to here.
The first half of the interview is general questions on the hardware and development in which Nomura and Kitase respond with the usual love for the Playstation 3.
"it's not just about how pretty the graphics are but more of how much limited amount of movement we can put in one go and how big our imagination and ideas are. The PS3 is the machine that is closest to being able to express our imagination."