User blog comment:QuantumFeint/Tristana rework - inspired by Thok Pwnage/@comment-24795478-20140927075434/@comment-24558666-20140927121332

ASPD reduction is mostly affecting rapid fire active. New passive part of rapid fire will not only make up for it, but it will also give you stronger mid phases of game(especialy if you build IE or Stattik first, which you will do as Tristana).

AP tristana got sort of nerfed, but new autoattack modifier allows for Nashor and makes her Q be actually useful in her kit.