Keeping the 6s plus for another year, nothing major upgrade really :/ processor faster graphic better but I don't use it to game so no big deal, the camera looks nice but not justifiable. Killing off headphone jack really puts me off!
As an audiophile Bluetooth quality really isn't up there yet, the adapter comes with the 7 looks like a joke sort of back to 2005.
I hope they will put back the jack next year (highly unlikely) unless sales isn't good. Like Samsung forcefully remove the sd card slot on s6 era they put it back on s7
Tbf I will see what big deal iPhone 8 is about, given that the android is moving up so quickly (in terms of system stability and fluidity) my side phone s7 edge replaces the iPhone for taking photos.