Her basic attack range went from 550 to 500 to 525, and her Q range went from 900 to 800 to 825. Apparently somewhere along the line her Q's mana cost stopped increasing per rank and is now a flat 50. I usually aim for late game, rush Chalice and pick up a Grail eventually, so there's really no such thing as a mana problem with her anymore.
Just like with, say, Corki or Viktor or Karma, I think there's a fairly big hidden advantage in how a lot of people just aren't very aware of what she can do. I tend to get away with a lot of stuff I really shouldn't be allowed to get away with just because it's clear some opponents don't know how to react.
I've even ran into one guy in Dominion who built her halfway like a ranged carry (IE and PD and Nashor's Tooth, IIRC) so he could chunk people with her passive and it seemed to work surprisingly well. She's tied for AS growth per level at third place with Riven, just behind Eve and Kass, and by level 18 she's like 6th fastest in the game.