Her passive resets are the same, but now she casts Sinister Steel on kill or assist.
Her Q now only throws ONE dagger, but if you proc it, it resets shunpo, and after a short delay it explodes into a circle of daggers which mark and damage surrounding enemies. You can then proc them for more shunpo resets.
Her W is similar to Nidalee's Cougar W. Kat slashes with her daggers in an area in front of her, damaging and STEALING movement speed. The more enemies hit, the more movespeed she gets.
Her E is the same, except they removed the damage reduction and the warp jumps.
Her Ult is the same, except they removed the Greivous Wounds. (They're still considering this one)
She got a bunch of number changes all around.
I promise and guarantee you this is the Katarina rework, although some slight changes may still occur. If you don't believe it, that's fine, but you WILL be proven wrong when it comes out.
Oh dear god. If her Shunpo still procs Q, that's Shunpo proccing it's own reset without needing to kill the target, then resetting again if her target dies. That's like... a minimum of 3 Shunpos per QWE kill.