You're obviously peddling the phone (your username, 2-hrs-old account). But I want to know, how you have Android 7 on the G4? mine has 6.0.1 and there are no pending updates. Other than that, very happy with this phone.
That supports Android 7.1 on lots of devices the manufacturers don't (I have it on a 1st-generation Moto G).
Standard update. I'm not in US though. Maybe Lenovo is releasing the update progressively.