I like it, feels newer/more contemporary, but not over the top. Just a clean and simple upgraded UI. I like that the text amidst the white is gray, if it were black I think it would be a little more tiring to look at. I like the 'hide post' option.
I guess if I had to think of a complaint, it would be that although it is nice and clean, it feels sort of generic. As in it doesn't exactly feel "car-like" if that makes sense. But then again, the default UI doesn't do that either, haha. So it doesn't bother me.