New icons look great, much better then the previous one. I still don't understand how anybody at Microsoft thought they looked good enough to be put in the preview builds. Ugh.
I also like that they finally changed Notification flyout (and it seems every other taskbar flayout) - now the background also has blur applied and that ugly white border isn't there anymore. I like it.
Fake edit: it looks the language flyout still has the old look, i.e. no blur and a white border around it.
Unfortunately, it seems Microsoft listened to
my whining and changed the look of taskbar's jump list; now it looks similar to the Start Menu jump list - i.e. ugly :/ Oh well, at least now its consistent.