Along with the higher processor yields, what's most attractive is the power/heat savings. These 45nm Cells use 40 percent less power than the current, 65nm Cell. Sure that's a power savings for customers, but it's also a major heat savings for designers. The PS3 may not have the red ring of death problem like we've seen in the Xbox 360, but a cooler, smaller Cell could fit in a cooler, smaller PS3 (requiring less fans, etc.).
And while Sony has already managed to nearly break even on their
console production cost vs. retail prices, the impending redesign could
help Sony cut a legit profit from hardware (or allow Sony to cut prices
again, instead). We'll keep an eye out for the new chips, but unless
they come bundled in a smaller or cheaper PS3, none of this will really
matter to you anyway.