Apple needs to put a desktop proccesor in their Desktop computers i.e. iMac.
It's a friggin desktop, it needs a desktop chip. The Mac Pro has always had the same chip as the Servers, and it will continue to be that way.
By the end of this year:
Mac Mini - Merom
MacBook - Merom
iMac - Conroe
MacBook Pro - Merom
Mac Pro - Woodcrest.
Here is the justification for each machine.
Mac Mini - They can't give it a 32 bit CPU. Yonah's will smell worse than my ass after I take a crap by the end of this year.
MacBook - Once again, they can't give it 32 bit. See above.
iMac - They can't give it the same CPU as the Mac Mini, because of the price difference. And it's a desktop, so it will get Conroe, which isn't much more expensive than the current Core Duo's.
MacBook Pro - This is the right chip for them. They will have faster clocked chips than the MacBook and Mac Mini. The other big difference will be GPU versus Integrated in the Mac Mini and MacBook.
Mac Pro - They have always had the same chips as the servers, and they can't put the Conroe in the Mac Pro because Conroe will be in Dell towers selling for much less than what the Mac Pro's will cost.
There, you can't argue with me can you?