I'll use this for a changelog for now. Anyway, things that have changed in the recent updates:

(V6)
-Increased the size of her sprites from 125x125 to 150x150
-Decreased damage of down-smash and forward special
-Increased range of down special

(V7)
-Fixed offset issues on down smash and down special, so she doesn't float above the ground when using these moves

(V8)
-Fixed her up special; it now sends you into special fall after using it, and has a hitbox when she twirls in the air
-Fixed her down special, it now sends you downward when used in the air
-Increased speed of down special
-Fixed offset issues on up smash

(V9)
-Fixed up special, making it easier to recover with
-Adjusted hurtbox
-Adjusted hitboxes on various moves
-Fixed neutral special, so it can't be repeatedly spammed anymore

(V10, most recent version)
Major overhaul of Kyoko, thanks to being combined with Syris' version
-Neutral special is now a projectile; either a fast moving baseball or a slower but more hardhitting volleyball depending on how long you hold the button
-Previous neutral special has been moved to down special
-Back air changed to a simple back elbow
-Previous back air moved to up air
-Hitbox changes on various moves, mostly making them more in line with the actual animation
-Up special now sends you higher if you hit an opponent with the very beginning of the move
-Down air now has a pogo effect if you hit someone with it
-Forward special now keeps you in the air when you use it
-Sprites have been sized down from 150x150 to 128x128