The highly anticipated season 4 of Rainbow Six Siege has been teased by the developers. They posted the above picture on their social media outlets with a headline “time has come.” This clearly indicates that the game will be receiving a new map and the Japanese operators in the period of next couple of weeks.
We say a couple of weeks because that’s how Ubisoft has been doing each season’s release. They tease new operators and map, and then officially reveal them two or three days later. Actual release happens almost a week after the reveal.
Now that official tease has been done, it would be safe to assume that we will be getting our hands on new operators and map by mid-November.