I'm more excited about some of those UI changes than I thought I'd be. While I can only think of one occasion when I would use the feature to have two apps open at once (copying shopping list items my wife sends me into Google Keep), I guess I could find other uses. I do like being able to choose my own layout of the quick settings shade.

I wish Google would do some more work on the share menu. It's slightly better than it used to be, but still pretty messy.