Attack speed per level lowered to 2.5 from 3.2
Base attack speed also increased to [0.67] from [0.658].
Attack delay to -0.067 from -0.05
Steel Tempest (Q) - added to tooltip " is interruptible by crowd control "
Last Breath (R) - secondary effect of increased bonus armor pen now only applies to Yasuo's critical strikes rather than all attacks.
"For 15 seconds, Yasuo's critical strikes gain 50% Bonus Armor Penetration - this affects Armor from items, buffs, runes and masteries"