At least he won't be able to dunk his way to easy Pentas now, yet Katarina can still do that. Correction: He still can, but he has to be quick about it.
Sources:
http://www.surrenderat20.net/2013/02...be-update.html
http://www.reignofgaming.net/news/23...-for-2-19-2013
Odd though that they took out Master Yi's Q AD ratio though. And BoTRK was once again changed to have lifesteal.