https://www.gamespot.com/articles/destiny-2-xur-guide-what-exotics-are-for-sale-and-/1100-6458893/

As is the case every week, Destiny 2's mysterious merchant Xur has arrived--this time on Nessus--with another slate of items to purchase. This is a more significant visit than usual, as it's Xur's first appearance since Bungie released the game's second DLC expansion, Warmind. That introduced new Exotics and a variety of other content to get your hands on, including one new Warmind Exotic.