The content update comes as a shockwave has hit the game’s Abyss, causing several new islands to form. This means that players can explore one of two new factional landings, check out 16 additional bases, and go farm a level-46 elite hunting ground. However, the patch has also closed the doors to the Abyss Core, perhaps forever.
Patch 4.9 also added the solo Sealed Argent Manor dungeon, restructured the Storerooms instances (formerly called Upper Abyss Fortress Chamber), lowered the level requirement for some early skills, added a portal to Panesterra, and more. You can read all 28 pages of the patch notes as you update the game.