Well, near as I can tell, this is just a somewhat verified rumor... I don't think anyone has seen any leaked screenshots quite yet. I suspect it won't look all that dissimilar to what GPM looks like for a regular track. Maybe they add in some text description widows, etc and some additional settings (auto-download, keep old podcasts, etc).
I'm curios if you need to subscribe to Music to get podcasts, or if it will be an option in the regular hamburger menu. Does anyone know? I don't have any desire for subscribing really so if that's required, I'll be sticking with PocketCasts
I was just about to check into this since i am converting from ios to android. And I tried to sync my podcasts with Google Music with varied results. I thought it was being added to the actual music app I didn't see that it was becoming a separate entity.