What about the MacBook?
You know, all I personally want is to see Apple fitting a Merom inside a MacBook (non-pro, yes)... I mean, why shouldn't they do that?
Sure, back in the PowerPC days, the differentiation made by Apple between their consumer and professional lines was based both on features AND processors... In a way, it made some sense, as the supply of PowerPC chips was sometimes constrained... Since the G3, G4 and G5 families were alternately produced by IBM and Moto-Freescale, that was less of a problem, as the consumer line would never cannibalize supply for the professional line and vice-versa. I know I'm speculating here, but it sure makes some sense. And, of course, they avoided not only cannibalization on the component supply front, but also on the sales front...
Anyway... This worked fine back when Apple was, platform-wise, isolated from the rest of the other computer manufacturers. Now they can't afford to lose customers to other brands (and as much as OS X is an attractive proposition, most potential switchers won't take the plunge if they feel they are REALLY being ripped-off), and let's face it: if the Core 2 Duo processors will, as it appears, cost the same as their Core Duo counterparts did when they were launched, why shouldn't Apple slap them across the board? They could always deplete their stock of Core Duo processors on their Mac mini line, while lowering them to their original $499 and $599 pricetags...
Just my €0,02... It's true, I'll have to get my hands on a MacBook until the end of September, so this is mostly wishful thinking

. Anyway, am I too off-base? (I'm guessing not...).