In short, yes, they want to do a flyover between the Credit River and Mount Pleasant. Here's the latest:
https://www.therecord.com/news/waterloo-region/go-trains-inch-forward-but-hurdles-delay-full-kitchener-service/article_6ce2cd63-a3f7-5e65-a425-f9fc7b05f529.html
Metrolinx is pursuing it...