I say yes , minimum frames in Games across all resolution ( even at 2160p) which is GPU Bound are witnessing an increase. If you have the why not , or you can wait for IceLake ( 10nm +).
I have a similar question upgrading from a 7600k - 8700k is it worth it? Mainly do gaming but I'm doing allot of video editing lately? Also I'll need to upgrade the mobo kinda sucks