I'm guessing Steve Jobs looked at all the rumour sites yesterday and said "Screw 'em. Let's forget about introducing the new iBooks, minis, and iTV Plasmas that they all figured out we were going to announce, push those back to next month, and announce next month's iMacs and MacBook Pros instead." :-)
The MacBook Pro is not cheap, but is reasonably priced, and has some compelling improvements over the existing PowerBooks, and especially over my two-year-old low-end model. It's a very tempting upgrade. I've enjoyed the 12" form factor, but since the new 15" unit is thinner and about as light, the extra couple of inches might not seem too bulky.
But... poor Rob might be irritated with me for recommending that he go ahead with a new iMac last fall, rather than waiting.