In a note on WindStar’s website, they stated:
The new zone sports new and truly nasty creatures that will require players to group and to take them down. A series of catacombs carved from the blackest ice in Arcterra called the Bor Milug, is guarded by the Covenguard. You need to defeat these guards in order to gather parts to the Blade Key, an artifact that allows players to secure the dark passages.
There are, along with this new zone, a lot of new mounts, pets, housing décor and other rewards. By completing quests and defeating bosses, you can earn a new snow bike, ice-themed Trasks, and war pigs.
Madame Fay also has a horde of new baubles, toys and shinies for your visits to her. Head to the forward expedition teams and work with them to gain access to Arcterra.
