Above should give you all the information you need on Xur this week, his location is [b]as you enter the tower hangar go right[/b]
[b]For sale:[/b]
Sunbreakers
Chest of Alpha Lupi
Mask of the Third Man
Exotic Helmet Engram
Truth (Rocket Launcher)
Alternative Locations:
http://i.imgur.com/HfXkLz8.jpg
http://www.destiny.exposed/xur/