Figures. Three months after the guy in the Apple store swore they had no information about an impending upgrade to the iMac. And I bought one. (In his defense, he probably didn’t know, given how close to the vest Apple plays this stuff.)
Anyway, glad to see the upgrades are significant and not just incremental.
http://buyersguide.macrumors.com/
Never buy an Apple product without first checking that buyer’s guide. The check historical release timelines and all the rumors to come up with what is usually a pretty accurate suggestion.