You can always Find Xur and his inventory here on FindXur.com, every Friday.
Xur is on Titan, at The Rig. He will remain there until 12:00 PM EST, December 26. Discuss his gear and more in Discussions.
Riskrunner [Exotic Submachine Gun]
Lucky Pants [Exotic Hunter Leggings]
Doom Fang Pauldron [Exotic Titan Gauntlets]
Wings of Sacred Dawn [Exotic Warlock Chest]