After trying to get the new chromecast to work for a whole month, I am sending back this device. The home screen is littered with ads, even for services which I did not subscribe to. It does NOT show recommendations for anything non prime/netflix/disney. No arte, no plex, no local services (ARD/ZDF in Germany).
I have tried everything from tweaking buttons and installing different launchers but I cannot get it to work completely. Wolf Launcher gets rid of the ads and lag, but ambient mode doesn't work. The "apps only" mode is NOT A VIABLE OPTION. It forces you to use a row with maximum 20 apps (no columns??????) It still shows ads in full screen on the top. Assistant and ambient mode stop working. The only reason "apps only" exists is to kick the user right back into "ad mode".
These are all things that work on other android tv boxes and are deliberate decisions by Google. My house used a multitude of google products (like a ton of minis) but the new chromecast will not be one of them.
Wolf Launcher is a hacked/pirated app, ATV Launcher Pro that it was 'stolen' from works just fine IME.