Rainbow Six Siege on Twitter: "Don't miss our Y6S4 reveal TODAY! 😎 See you in about 2 hours, at 1:00 PM EST / 7PM CET on: https://t.co/q7A3z2vvlE https://t.co/jAOtvEy1Iy" / Twitter
Rainbow Six Siege Operation High Calibre patch notes: Y6S4 Thorn Operator, map rework, more - Charlie INTEL
Rainbow Six Siege Y6S4: High Calibre Release Date, Update Time, & Patch Notes
Rainbow Six Siege' Y6S4.2 update will nerf Ela and Zofia
Y6S4 High Calibre: NEW OPERATOR THORN FULL GAMEPLAY REVEAL - YouTube