User blog comment:Simbey/Real Talk: Rengar/@comment-5284325-20140508203140

some things you did not include:

Q cooldown got reduced by 2 seconds at all ranks (6 to 4, from 8 to 6) - this helps ferocity build-up a lot.

ferocitized E (I like this term) deals 475 physical dmg (alot) at lvl 18, and the snare duration got increased to 1.75 from 1, which is a big deal. Also E slow is is stronger generaly.