-Full characteristics of each race displayed makes it much easier to choose between them. Previously some stuff was a bit of a mystery.
-Tooltips are really handy, especially since I'm still unfamiliar with a lot of things
-Scrollbars make the game much much more playable with the mouse, and make inventory management in general a lot better
-I'm playing a roguelike which gives me the option to disable antialiasing, framebuffers and shaders. - awesome

-Game feels smoother and faster in general.
Hmm, and more to come as I play more. Looking forward to finding wands and other new items.