Since there are so many mistakes regarding maths involved in the potential change, I think this needs to be clarified.

ATTACK SPEED GROWTH IS JUST %ATTACK SPEED.

KAYLE'S BASE ATTACK SPEED IS ALREADY 0.667.

For an unknown reason, RiotAugust mentionned a wrong information on his message, Kayle's base ttack speed is not 0.625, it is already 0.667, she just suffers a 0.042 decrease for some reason. So there is no "she will scale harder with attack speed items", the formula is still 0.667 X (1+[atk spd growth X lvl]+[bonus atk spd from items and passives]) except that now her passive give her 20% LESS attack speed and she gets 0.5% MORE per level. So it evens out at lvl 40. Which means that it is a nerf of 11% attack speed at lvl 18 (a tiny bit more than 0.07 attack per sec).

I don't care regarding the rest of the changes but this part needs to be said