Hi everyone, Thinking about switching to the new 5k iMac, currently have a workstation with I use for VMs, video editing, photoshop, and dev work. All of which I can do with the new iMac. Just wondering can I upgrade the hard drive after purchase. I know memory is upgradeable. I noticed an article where the 21 inch the hard drive was no upgradable, hoping thats not the same for the 27 inch version. Thanking you in advance for feedback. Cheers.