You care ALOT what other people do.
'Months' being most likely early next year. For most people and most tasks the GPU is the bottleneck not Haswell processors (which are the latest and greatest at this very moment for Quad-Core).
In any case, the reason I am buying one right now is because the screen on my 2012 is cracked and this seems like a very respectable update in every respect besides the CPU, which will still be an upgrade for me. And secondly Macbooks retain their value so well that the worst that could happen is I get a new computer for 8-9 months and then sell it for a few hundred dollars loss and get a skylake.