Please correct me if Im wrong the new rMB has a core M which is slightly worse than a core i3 sandy bridge making the core i5/i7 hasswell and broadwell chips
Moving on to my point because now that apple has used core M that would mean that future versions of OS X will Nurffed down for the next 4 years to be stable enough to run on the core M with no lag which would mean a device such as the (Mid 2012 MBP) has a life span now of at minimum 7 years maybe this is why apple still has it in line-up so that would mean our 2013-2015 MBA will last 7 years or more?
Moving on to my point because now that apple has used core M that would mean that future versions of OS X will Nurffed down for the next 4 years to be stable enough to run on the core M with no lag which would mean a device such as the (Mid 2012 MBP) has a life span now of at minimum 7 years maybe this is why apple still has it in line-up so that would mean our 2013-2015 MBA will last 7 years or more?