Intel iMac processors replaceable
Accelerate Your Mac is reporting (I'd link directly to it, but it seems that they don't believe in the power of permalinks) that a recent issue of MacFan (a Japanese Mac magazine) has successfully replaced the Intel processor in the Intel iMac with a different, slightly faster, Core Duo. This means that it is conceivable that folks will be able to upgrade their iMacs to use even faster chips as Intel pumps them out, without having to replace the entire motherboard (which, if possible, would be every expensive to say the least).
Japanese Mac fans never fail to amaze me with what they are willing to do to brand new Apple gear. I salute you!