Ubisoft and Massive Entertainment have released another The Division 2 trailer, exploring the endgame content that SHD agents in Washington DC will be able to experience. A followup tweet also revealed more, including the world tier system.
The Division 2 endgame content has been extensively teased lately and Ubisoft decided to press on with such promotion. The latest trailer offered the first glimpse of eight agents in a raid, but didn't show any raid gameplay yet. We do know that the first raid will be called Operation Dark Hours. They also stated once again that the rules will change when reaching maximum level.
This probably means two things, with the first one being the arrival of the Black Tusk faction. The trailer specifically states Black Tusk have been trained and equipped with tools aimed at combating Division agents. No mention was made about who recruited them or why they would like to remove "the last line of defence" from Washington DC.
Another way the rules will change are the world tiers. This is not a new feature as it exists in the original The Division, but it wasn't confirmed before whether the system would make a comeback in the sequel. It essentially prolongs endgame's life by letting players gear up and fight progressively stronger enemies, to ease the power spike.
A new stronghold will open up with the endgame. Ubisoft didn't specify which enemy faction will control it, but it is presumably Black Tusk. They are, after all, there specifically for endgame purposes. It remains to be seen whether they will have a proper backstory or if they will remain unexplained throughout the game like the Hunters in The Division.
The aforementioned noted that there will be something called Priority Target Network, but this feature has not been explained yet, at least not to our knowledge. There is no doubt Ubisoft and Massive Entertainment will continue dripping info about the endgame before The Division 2's release on 15 March 2019.