I think that if they can, they will. "Can" being dictated by the market of course. Look at the Mac Pro - arguably the most ignored product line Apple sells, yet

I think that if they can, they will. "Can" being dictated by the market of course. Look at the Mac Pro - arguably the most ignored product line Apple sells, yet it still sells. If people continue buying the non-Retina MBPs, I have no doubt Apple will continue updating it, even if slowly.