Not appreciably more than the 7+

https://9to5mac.com/2017/09/06/iphone-8-compared-to-iphone-7...

More PPI sure, but I think we reached the point of diminishing returns a while ago.

(Ignore the headline - the opening image is an X set next to a 7+)

I was responding to someone comparing it to the standard model, not the plus models. See the text I quoted, and see their original comment.