I don't know about you, but when there's new updates on my iPhone, I download it right when I get a pop-up to update.
When I updated to iOS 10.2, I found a new app and I didn't find the "Videos" app. When I opened it, the intro said it replaced the videos app. You can download apps like ABC, CBS, etc. to add on the TV app.
When I checked for my AT&T U-Verse app, it was not there (Note: You can auto login to Dish, etc. to iCloud Keychain and it will auto login to other apps).
The TV app has nothing to do with the Apple TV. I thought it was a app for the Apple TV, but it works with iTunes movies, shows, and channel apps.
If I had to rate this 1 out 10, I would say 7 out of 10.