It will be another increment, just like all the others. The issue you run into is you need 16 non-dependant 32bit vectors, you know how everyone loves to quote Amdahl's law around here

. Manderbolt ( what the sandra multimedia benchmark is) gets perfect scaling it is in no way representative of common workloads, if it was CPU's should pack up and go home now, GPU's are king.
Also any thing that isn't SIMD wont use AVX2 just like how it doesn't use AVX or SSE , MMX , etc now. Try keep thing in reality. Its still a struggle to find things that are compiled with AVXyet alonethings that are actually written with it in mind.