Do you know how old the current iMac is? Half a year. In terms of major Apple design overhauls, six months isn't a very long time, but considering that the all-important holiday shopping season is about to kick off, it follows logic to think that Apple would update its most consumer-facing Mac lineup in preparation. AppleInsider seems to have a pretty good read on a purported refresh, noting that a thinner chassis (predictable, but appreciated) and all-around lower prices are on tap. We're told that the enclosures could closely mimic the firm's new