Thoughts on Chrome’s Plan to Distrust Symantec Certificates

This has been a topic that's been ticking the back of my mind now for quite some time.

Amazon uses symantec cert for the product images that we show on our site.
And google is scheduled (April 17 Chrome update 66) to deem unsecure any site using Symantec certs issued before 2016.

So what will really happen when Chrome update 66 kicks in?
Has Amazon updated their certs? If so, why do we see the images-na.ssl-images-amazon warnings in our browser inspects?
And what exactly dose…

Thoughts on Chrome’s Plan to Distrust Symantec Certificates