They were expected this summer at WWDC, but the wait might have been worthwhile—this refresh is far more significant than we thought. The new models are 80 percent thinner (just 5mm) and about eight pounds lighter than their predecessors. We didn't anticipate a redesign, but they're incredibly beautiful from what we can see. Apple will offer iMacs in 21.5-inch and 27-inch versions, the latter of which has a resolution of 2560 by 1440.
The screen has 75 percent less reflection, and a few other features like an HD camera, dual microphones, and a stereo sound system that's supposed to be much better than the previous generation. Specs got a bump too—the new machines have quad-core i5 processors (configurable up to i7), up to 32GB of RAM, and as much as 768GB of flash storage. RAM is accessible in the 27-inch iMac, but not the smaller one. Both of these guys have four USB 3.0 ports and two Thunderbolt, which is very nice. On top of that, there's an SD card, gigabit ethernet, and a now, a fusion drive—that's 128GB of flash storage plus 1 or 3 TB of hard drive combined into one hard drive. Doesn't sound half bad, although customization might be a bit more difficult with such a big update.
The smaller model starts at $1300 and ships in November, and the 27-incher starts at $1800 and ships in December.