A few improvements were made to the contents found in the Black Lion Chest. There is now a chance for a permanent Banker, Trading Post NPC or Black Lion Merchant.
We’ve made some changes to improve the black lion chests.
First, we’ve changed all tonics to be stackable and random. If you prefer a specific tonic, we’ve added mystic forge recipes for 3 mystery tonics and one extra item to transform mystery tonics into specific transformations.
We’ve also added a rare chance for a Permanent Banker, Trading Post NPC or Black Lion Merchant.
Read the official forums announcement here.
The permanent banker and permanent TP chances will drive the value of these currently worhless chest through the roof - I predict people buying up huge stacks of them to try and get these two things.