I had to send in my A7r for repair. So I needed a spare camera right away, and I always had an eye on the A7II. I got one, and it blew me away. Beside Mpx which is kind of nice to have, like horsepower in car, the A7II is a major step forward.
We all know about first curtain shutter. OK, it's nice to shoot with a 120mm at 1/125 without being afraid of a blurred image, but that is just the cream on top.
In body stabilization is just a killer with non stabilized lenses and high Mpx. This is also true for the Zeiss 55/1.8 which is very hard to shoot in dim light. You will always need fast exposures when mounted on the A7r. With the A7II it just fun to shoot even in low light.
The body is a little heavier but seams to be more on the heavy duty sider. There is more custom buttons and I do like that. Beside the Mpx I don't see any point where the A7r would catch up. Well done Sony.
By the way, Sony released the Touchless Shutter App. You just put your hand in front of the EVF and the shutter releases. Very cool.