GGG released PoE 3.9 Metamorph Official Trailer on ExileCon, PoE 3.9 brings a lot of changes, new league themes, new bow skills, and most importantly, PoE's endgame content -  atlas of worlds will usher in a real rebirth.

Defeat Combined Monster

In the Metamorph league, you'll meet a new NPC, Tane Octavius, a master alchemist who studied in Oriath. Tane will take DNA samples from monsters you kill, and once you have enough you can call on Tane to combine them to create your own boss battle. Each DNA sample Tane collects will have different properties that will change what abilities this new boss has, with more powerful samples increasing your chances of getting more powerful rewards—assuming you can defeat your creation that is.

New Skills and Currency

PoE 3.9 will bring complete rework of bows, including new skills and buffed damage. Bows will now be more viable as a weapon type, and abilities like Ensnaring Arrow, which prevents enemies from moving, will give bow users more options in a fight.

What's more, metamorph encounters can also drop Catalysts, a new type of currency item that adds quality to jewellery. There are many types of jewellery quality, each related to a set of mods. The quality value on a piece of jewellery scales up the magnitude of related mods on the item and can be consumed through crafting to increase the chances of rolling related mods.

And, you may have noticed that a new Exalted Orb has been added to PoE 3.9. This new Exalted Orb will enchants a rare item with a new modifier. Based on this feature, players can do more things that were previously impossible, such as + 1 skill gems level

Conquerors of the Atlas

This big update is called Conquerors of the Atlas and, among many smaller changes, features an entirely reworked endgame. Currently, once players beat Path of Exile's campaign they set out to explore the Atlas of Worlds, a map of randomized alternate dimensions that go from mildly challenging to batshit insane. Once the new Conquerors of the Atlas expansion releases next month, the Atlas of Worlds will be significantly changed to present an even stiffer challenge.

Path of Exile's endgame is enormously complicated and hard to explain, but the gist is that after defeating the original villains of the Atlas, the players themselves have become corrupted and now need to be put down. To be clear, the character you will be playing isn't the boss, but Conqueror's of the Atlas adds five new endgame bosses that are based off the main character classes you choose.