iFixit posted a teardown of the new iMac 21.5"
We got up this morning to news that the new iMacs were out, so we knew what we had to do: start sharpening our suction cups!iMac Intel 21.5" EMC 2428 Teardown
Thankfully, this iMac model opens in the same way as previous generations. All you have to do is pull off the magnetically-held display glass with two medium-size suction cups, and then remove the screws holding the LCD in place.
But what lies inside? Only one way to find out...