apple's refusal to follow trends comes right from the top. yes, it can be construed as arrogant that jobs hasn't commented on his health before now. but that's his way. this methodology has downsides, but it keeps the company from slogging it out in the sewers with all the other commodity manufacturers.
this announcement is a reaction to outside pressure, which is the opposite of what makes apple great.
They did exactly this a year before Jobs came back. In spite of Jobs's claims to the otherwise, the experiment did not last long enough to indicate whether it would have been viable in the long term. What is clear is that the clone makers where releasing computers more expandable and powerful than what Apple actually had on the market.
"Completely uninteresting" in exchange for "expandable and powerful" is not a good one for Apple to make.