Onus :
What is prompting this upgrade? The i5-3570K is still a competent CPU. If your primary focus is games, you might do something like get a single GTX1080; otherwise, unless specific benchmarks show needed improvements, you might simply be wasting money.
well ive upgraded parts of my system already, such as case, cpu cooler, PSU, keyboard, mouse, mousepad. I suppose its more of an aesthetics thing as my upgraded parts are RGB, while my RAM and motherboard are decked out in blue. My other conscern is if i upgrade to the i7 7700k now, will coffee lake be the same socket so i dont have to upgrade my motherboard when coffee lake is released.