He did get buffed. Pretty nice one too. His q poke already hurted a good bit and now it hits even harder. Also people seem to just forget about him. He already have a strong kit, only the meta needs to change. Now in this tank meta he is performing well, when poke meta or something comes, he will be a VERY strong pick.
If a champ was rlly good before and was not nerfed and just disappeared from League, most likely the champ is actually really good in a specific meta so buffing him just because he is not performing well in a certain meta he should not get buffed. Look at Ahri. She is doing horrible in this tank meta. So yeah, Ahri is doing horrible because her damage was gutted and the meta is not good for her. Most probably Ahri will stay in this state for a very long time because the community for some reason thinks she is good when in fact Froggen, Bjergsen, and Shiphtur have all said Ahri is a weak champ.