Well, that was an adventure! Turns out the screen to the new iMac wasn’t as easy to get into as we initially thought. But, our intrepid team, armed with suction cups, spudgers and a heat gun were eventually able to get the display removed to reveal the inside. Once inside, though, it was pretty straightforward.
As you can see, it looks like a standard 2.5” SATA drive in the main bay (time will tell whether we’ll run into the same heat sensor issue we had with previous models), and definitely standard memory, so once we can work out a way to easily and safely open the iMac itself, these will be fairly simple upgrades.
One other thing we noticed is that the “higher-end” iMac has an SSD bay that is missing in it’s less-expensive sibling. The good news is that it appears that they’re using the same kind of SSD that they’re using in the Retina MacBook Pros, which means adding one from OWC is a simple matter, as well.
Update: While it appeared the Aura Pro for rMBP would work in these machines, subsequent testing has unfortuately revealed our SSD is not operationally compatible at this time. We are working on the issue and come back here to this post to learn if and when we have resolved the matter and have test confirmed proper operation.