Not sure if anyone has posted this on this thread before but just to give you an idea of how much each processor costs (Apple obviously gets a discount on this price):
Core Duo
T2600 - 2.16 GHz, 667 MHz FSB - $637
T2500 - 2 GHz, 667 MHz FSB - $423
T2400 - 1.83 GHz, 667 MHz FSB - $294
T2300 - 1.66 GHz, 667 MHz FSB - $241
Low-voltage Core Duo
L2400 - 1.66 GHz, 667 MHz FSB - $316
L2300 - 1.50 GHz, 667 MHz FSB - $284
Core Solo
T1300 - 1.66 GHz 667 MHz FSB - $209
(Yup, Intel do not make a Solo 1.5Ghz, Apple probably underclocked the one above for the Mini)
The thing to note here is that for a little bit more than the cost of a 1.5Ghz low-voltage Core Duo, Apple could use a 1.83Ghz Core Duo, and in the world of marketing, what sounds better? This is why I think ThinkSecret are wrong.
My prediction, and I'm working the pricing on the recent Google snapshot showing a lowered price...
MacBook Solo - $949/£679
1.5Ghz Core Solo
512MB DDR2 SDRAM
60GB 5,400rpm Hard Drive
GMA 950
Combo-Drive (4x Super -> $50/£40)
Front Row
iSight is a possibility but I'm unsure.
MacBook Duo - $1199/£849
1.66Ghz Core Duo
512MB DDR2 SDRAM
80GB 5,400rpm Hard Drive
GMA 950
4x SuperDrive
Front Row
iSight is a possibility but I'm unsure.