Iron Banner seems to be returning tomorrow at 10AM (June 30th) along with new gear. If it’s similar to previous Iron Banners, it will last typically for a week.
Iron Banner returns tomorrow at 10AM. Earn Gauntlets, Chest, Machinegun and for the first time ever… the Pulse Rifle (Skorri’s Revenge).
— Bungie (@Bungie) June 29, 2015