I was lucky; upgraded to V9.0 just before leaving town for several days on a business trip. Before I'd returned, I'd already installed 2018.42 via the iOS app.
I'm pretty satisfied with the flexibility of having Rear Camera over Media, bonus of having several settings for how minimized/maximized the Media player is (and thereby how high up the camera view appears, and how much Map shows at the top). It is possible to configure Media/Camera/Map, each taking roughly 1/3 of the screen.
My disappointment with V9 in general is that it takes more "clicks" to get to camera (app launcher --> camera), and I just realized yesterday that there's no longer a visible Calendar icon showing today's date until you hit the App launcher. It was kind of convenient having the Calendar icon across the top bar in V8, which always reflected the current date.