How do you all think this machine will handle future versions of OSX? Obviously, it is probably pretty optimized to run on Yosemite. Does the processing power concern anyone going forward? Could it potentially be a bottleneck for the machine going forward next year or the year after? I think most peg the processor as being on par with a 2013 Air. How long will those still get the latest updates? Do they stop getting updates b.c the hardware is not up to par?