The Hidden Ones is the first major season pass content for Assassin's Creed Origins, or, as I like to call it, AC Egyptian Style. The DLC up to this point has been mostly clothing and weapons to toy with. Nothing crazy.
But The Hidden Ones opens up the map to include Egypt's Sinai Peninsula. It also raises the level cap from 40 to 45 as the story talks about a rebel faction fighting off Roman occupiers on the peninsula. The bad guy in the video is talking about the Brotherhood of Assassins wanting "peace and order." Funny how the good guys and bad guys often want the same thing. It's just how they go about achieving their goals. That's what usually separates the two.
Assassin's Creed Origins: The Hidden Ones launches Tuesday, January 23. It's already part of the season pass. Or it's $9.99 sold separately.