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Seems like the chatter about quad core iMacs has really died down. Is the consensus now that it's not likely to happen anytime soon??
I'm sticking with a Fall 2009 update alongside Snow Leopard to tell us the glories of quad core. It's like it's 2007 all over again!
 
And, in theory, the Core 2 Duo iMacs (both 21" and 27") could be upgraded with the low-power Core 2 Quad processors. (The ones with an 'S' after the number, like C2Q Q9550S.)

That said, I did visit an Apple Store today, and the C2 Duo ones were plenty toasty, just sitting idle. I can't imagine how roasty the Core i5/i7 models will be, especially under load. (Having a 30W higher max dissipation processor.)
 
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