The only thing that tempted me was the camera improvements. Which aren't so much camera hardware as them greatly improving their photo processing via specialized computing hardware, as I understand it. Still, I take a lot of photos, and everything about this change looks fantastic.

Gruber's slideshow is good for demonstrating it: https://www.flickr.com/photos/gruber/sets/72157700003327111

Honestly, Apple's consistent approach of "new phone design with number-bump" one year then "same design with incremental improvements and an S" next year means that outside of unusual cases buying a new iPhone every year is silly. X to XS is underwhelming, but 7 to XS (or XR) is quite compelling.

Given which... unless Apple does something outright worrying, I expect I'll buy whatever they put out this Autumn. Get the fancy new camera features, and more of a notable increase everywhere.