Hello, I know I've read a bunch of first review/articles that say everything is soldered in, nothing can change, bla bla. I also read somewhere that the SSD drive is on a separate chip, just proprietary. Do you think we will be able to upgrade the HD at some point? I have a 256GB on order, but the idea would be to get a 756GB later when price goes down and an option. I know I could do external drives, but as soon as I spend 400 bucks on an external firewire drive or usb3, I might as well just got the 512GB drive option. Any thoughts?