According to David Reeves, president of Sony Computer Entertaintment Europe, the PS3 could get a 45-nanometer Cell chip in a few months. From an interview with The Guardian:
I've always liked the PSP hardware, but iterations like the PSP-3000 are failing to excite me. I just need something new. Unfortunately, Sony claims to not be working on a PSP sequel at this time.
You know that feeling of "that's it?" you had when you heard about Sony upgrading the PS3 from 60GB to 80GB and charging $599 for it? Sony's David Reeves had the exact same feeling. And he had the jalapeños to say it out loud. On the record. That's some spicy jalapeños.