Yes, the "Google Chromecast with Google TV" is the 4th generation (2020) of Google Chromecast and therefore the latest version. You can find release notes and specifications on Wikipedia. PS: I'm very happy with the device. Runs smoother than FireTV!

Yes, as far as I know, I haven't read anything about there being anything newer. The "Google Chromecast" is very reliable, works flawlessly and can do a lot of things that TV sets should have as standard but don't have. I can only recommend it.

Thank you