Rainbow Six Siege Update Today - Y6S1.3 Patch Notes, Update Size Here are the patch notes of Rainbow Six Siege Update Y6S1.3 Tom Clancy’s Rainbow Six Siege was released back in 2015 and the game has grown exponentially over the years. Ubisoft has a long roadmap in place for the game, with a slew of new operators and updates being released for the game from time to time. Today, Ubisoft has released a new patch for Rainbow Six Siege, Y6S1.3. The update brings a plethora of changes to the meta, such as equipping Ace with Claymore instead of Smoke Grenades, and adding Smoke Grenades to Thermite’s inventory. Here are the complete patch notes of the update.