My thought for today (although probably someone else had this one already...)
IIRC, not too long ago, IBM stated that they wanted to "open source" the 970. I don't remember the details, and I'm too lazy to look them up right now, but...
Technical issues aside for a moment, Apple switching to Intel has to be one of the biggest marketing disasters ever. Everything Apple has touted in the past, from the "megahertz myth" to the "fastest computer in the world" is suddenly going to be perceived as, well, wrong. The other guys actually had the better chip design. The hoops Apple would have to jump through in order to dissuade that interpretation given a switch to the formally inferior Intel isn't going to be easy, if even possible at all.
And what about tomorrow's WWDC? Have the developer's been given any advance notice of this? (WSJ and cnet's "sources"?) I couldn't imagine being in a developer's shoes, paying a lot of money to attend what looks like a big Tiger love fest, then sitting down for the keynote and have a bomb like this dropped on my lap. Where's the love? lol
Which brings me to my speculation of the day. What if Intel called Apple and said, "You know that open source announcement IBM made about the 970? Well, we're in. We are going to start developing chips based on IBM's open source spec, maybe even make some improvements to it. You guy's interested?"
Fast forward to the WWDC. Apple announces that Intel is going to contribute to the design of the G5 and build chips based on that design. (Recall Apple's modern open source heritage.) Job's further states that Apple will use whomever provides the best, fastest, most affordable 970 chip, be it IBM or Intel (or Freescale?)
Like AMD and Intel's competition today for x86, Apple can say that, for the first time, they have choice. Several of the most respected technologists in the industry will vie for the CPU slot in Apple's circuit boards. At the end of the day, everyone wins.