What does Zen CPUs have to do with Intel-based iMacs? Are you thinking Apple will abandon Intel?
Not at all, I find that highly unlikely actually. However it could significantly impact Intels pricing and incremental update scheduling.
[doublepost=1469371618][/doublepost]To add to my previous post. I'm not sure how well that will translate to the iMac especially with Apple Tax.
For example the Intel 4590 can be purchased from Newegg @ ~200 dollars + tax. The 6700k from Newegg is ~350 dollars + tax. So there is a 150 dollar + tax delta. Apple charges 250 dollars for that upgrade when building an iMac....225 dollars from their education store.
So its tough to say if pricing will directly be effected however if Zen is a powerhouse it will certainly effect Intels update scheduling causing them to put out better products that will trickle into the iMac.