I picked up my new iPhone 7 Plus today and found Apple had released a beta of the new Portrait feature. This takes advantage of the two cameras found on the plus model and with software does some fancy depth of field effects. I'm no photographer, but I love the effect. I'd imagine it will only get better as the software improves. Select an image to view if full-screen.
Lastly, the low light performance of the camera has vastly improved. I just grabbed this shot, through the mesh netting of a bouncy castle in the shade. It's one of my favorite of the day.
Really lastly, the wide color gamut of the new screen is breathtaking. You really have to see it to appreciate it. I didn't think I'd notice, but it's incredible.