Any advantage to Istio on Kubernetes 1.15 vs. 1.14.6?

I am about to install Istio and I have option to install it on 1.15 or 1.14.6

Is there any advantage to 1.15 or 1.14.6 for Istio ?

We test on 1.14 and 1.15 and I have noticed no issues on either version