Sony has very recently handed over a new PS3 SKU to the FCC for approval.
However, it does appear to be based on the 80GB specification (CECHE01) which indicates that it could be part of a new bundle or even a new color. Or even less exciting, the new SKU could just be an updated version of the hardware.
Those interested can read all the documents at fcc.gov.
More PlayStation 3 News...