Not sure if u mean upgrade from the 6s plus to the 7 plus. If so, I decided to upgrade even though I'm on the fence still about the upgrade. I liked the additional lens and improved camera. Was tempted to do the 7 route as well. But I find myself watching YouTube much more than I did before. I now watch YouTube more than regular tv.
I'm an 'S' man myself and usually only upgrade every two years on the S iterations.
I've got the 6S now and will prob get the 7S if they do one