Nocturnes E passive

When the fuck did they add it, I cant find a mention to it in any of the patch notes. Or is it a mistake that its even there? because currently it gives you a massive fcking boost of movement speed when moving towards a "terrified" enemy. Massive in this term means at least 150 to 200 plus movement speed from this alone. is this suppose to happen? I feel like i have jinx passive for just fearing someone, hell if i have a fid or shaco on my team, then i get a massive boost of ms from doing nothing.