Just after the servers went down for maintenance, Square Enix released the preliminary notes for patch 3.35. Of note, the Rose, White, and Round Lanner whistle drop rates have been buffed as well as can be purchased with 99 token items from the primal fight. There is also a lot of information on how Deep Dungeon will work, so while you wait for the servers to come back up, read up on the new content in preparation.
As always, full information is available on the Lodestone.