Are you talking about the OneUI/Android 9 update? I've had it on my Note 8 for a couple of weeks now and I find it rather good.
I don't like the new 'Recent apps' function (I think with the previous, card-style one, it was quicker to find the app you wanted) and I also find the extra swipe required to reveal the extra options for the sound volume a bit annoying, but the keyboard, sound and camera all work better, plus I really like the new 'Dark Mode', so overall I'm happy with it