I must say that I am tempted to be moved by all of the optimism here of late... but let me temper that enthusiasm just a bit with reality. The last time Apple 'updated' the Mac mini, we lost ground. No quad core processors. No user upgradeability. It is, as
@Crosscreek observed, the "entry level Mac, bottom of the Apple barrel, red headed step child". Apple has no desire to update this machine to anything powerful enough to threaten the iMac product line in the desktop space.
I firmly believe that
if the Mac mini does, in fact, get a refresh, it will be cobbled together with bottom of the barrel, leftover parts and Apple will still demand a price tag that covers its huge profit margin. But at this point, we have guarantee of any update. Cook says, rather cryptically, "we do plan for Mac mini to be an important part of our product line going forward"... and an Apple analyst now says that it's coming... but y'all are whipped up into a feeding frenzy over a product that
might actually get updated, but it will most definitely disappoint as it falls extremely short of your overblown and unreasonable expectations.
It's up to Apple to prove me wrong.