The iMac is amazing, and well overdue an overhaul. I'm gutted mine is only a year old, I'd love to get a new one.
iPad mini is a bit pointless IMO, the smaller screens are hard work to do anything but browse or watch films on.
A refreshed iPad just 6 months after the last one is ridiculous, a lot of people who are just about happy to upgrade annually are going to be mega pissed off. If they want to change the time of year they launch iPads they should of done it next year, or brought the 3rd gen out 3 months late and then the 4th gen out next year.