ArenaNet said:Players who own Factions will soon be given a new form of storage through the Xunlai Agent. This new tab on the storage account will allow you to store up to 250 of each type of material or crafting supply in the game, both common and rare. So as you acquire items, you can put them into the Xunlai vault and keep your regular storage space clear for armor, weapons, and special holiday items. The first tab on the Xunlai interface is where your items are stored; it has 20 slots. The second tab is the new vault where you put all your materials and crafting supplies, such as bones, shells, and other such things.
You can read more about this here.
Great news for those of us who have had to resort to creating a storage character for our loot.