So as Jinx's designer I asked to head up the nerfs coming out for her this patch. Let's talk about them and Jinxy in general.
First full info on the nerfs:
The min damage on the R is being cut. The max damage is staying the same. Additionally, the execute damage is not being touched. SMD rocket will ALWAYS deal 25/30/35% of the target's missing health regardless of range.
Buckshot [Q] - Now deals 60/90/120/150/180+0.75 bonus AD (down from 60/95/130/165/200+0.8 bonus AD) but multiple bullet damage increased to 50% (up from 40%)
Jinx
Super Mega Death Rocket! [R] - Now deals 25/35/45+0.1 AD at point blank range (down from 125/175/225+0.5 AD)
Ryze
Spell Flux [E] - Damage lowered to 50/66/82/98/114 (down from 50/68/86/104/122) and return damage lowered to 25/33/41/49/57 (down from 25/34/43/52/61)