I don't like how they make you fish for app updates now. No Updates item at bottom of screen. Now you have to press on your photo at top, then scroll down the window that displays. It never makes sense to add steps to a function.
Dark mode looks good so far. But I haven't had time to test much, plus it isn't night time so that is when it should have the most benefits to me. I always hated a bright background on a screen when trying to view the iPhone at night or in any dark location.
They are in your face with Apple Pay. No surprise there. I had to tell it to buzz off twice: once during the finish of installation, and then again when I went into Settings the first time. No big deal, but annoying none the less.
Now to find where they moved and hid stuff...they always do that...