2016 Update for Black Lion Chests:
- A new Customer Appreciation Package containing one Black Lion Chest Key and one Black Lion Chest is available at no cost for one week only. Limit one per account. Only available to Core or Heart of Thorns™ accounts.
- Every chest contains a guaranteed seasonal item that will change regularly.
- Every chest contains a convenience item.
- Every chest contains an item that will progress your account in some way.
- There is now a consistent chance at a fourth drop that is uncommon or rare.
- A random wardrobe unlock item has been added to the chest.
- Only for the duration of Halloween, the Grasping Phantom Glider is available as an uncommon drop in the Black Lion Chest.
Read More:
http://dulfy.net/2016/11/01/gw2-patch-notes-for-nov-1-game-update/