I love the new UI/hotbar/tooltip design. Looks easier to navigate and less clunky. I'm undecided if I will play this patch -- the new animations and cinematics are appealing, but I don't play barbarians and that seems to be the primary "new addition". Don't want to be burned out on Act I before release.

I also learned that there's more Underdark entrances, but, um, can't say I've been tempted to jump down a pit to find out lol