Operation Dust Line, the next expansion for Ubisoft's team-based shooter Rainbow Six Siege, will launch on May 11, the developer has announced. While you'll have to wait until then to play the content, Ubisoft will show it off this coming Saturday, May 7, on Twitch. You can watch a teaser right now:Watch a live demo of Operation Dust Line on Saturday, May 7 at https://t.co/q7A3z2dTX4 #RainbowSixhttps://t.co/FszVI27NIM — Rainbow Six (@Rainbow6Game) May 4, 2016 As announced previously, Operation Dust Line comes with two new operators.