Riot Games has revealed some short-term changes for Quinn to make her viable again in League of Legends. 

These changes are coming to the PBE next week though the actual changes won't hit the live servers in the 8.5 patch. We'll have to wait longer.

Base Stats - Shift some of her early game power into late game power

  • Starting AD reduced: 62 >>> 59
  • AD per level increased : 2.4 >>> 3 (AD at 18: 103 >>> 110)

There are also some large changes for her ultimate.

These are changes for the short-term which means Riot could have some major changes for her down the road.