So the game is getting a new mini expansion 3.5 version next month, and this time its essentially the nemesis like system from shadow of war games.
Your old master betrayed you and joined the organization of immortal syndicate. After defeating a member you will be granted options from execute, bargain, interrogation, betrayal, and influence the position of members in the syndicate. They will remember and often comment about your past actions (GGG took around 4 weeks to record all the voice lines options). They will also be sending assassins after you that can pop up anywhere and at any time and try to kill you (even during boss fights).
They are bringing reworked masters (with old leagues incursion, delve end bestiary) and crafting. New skills, items, new type of mod (that you can chose from 3 options what type of roll will be on your item).
Another interesting thing is that they are working on big expansion for PoE 4.0, that should be competing with d4 (that they thought would be anounced this blizzcon). In that update they will be reworking and updating the models and animations of all classes in the game. The game will also probably at that time drop support for win xp