The Neverwinter site has been updated with a new developer post by Tradd “Dreadnaught” Thompson that gives a forward look at some of the monsters that will be coming in the River District content expansion set to arrive later this year.
There are 3 types of enemies that players will encounter during their travels through River District: the minions of Gyrion, Kabal, and Nostura.
While the minions occupy the district, their masters reign from their towers, each with their own claim to the territory. Should you gain access to one of these towers, you will be able to face off against the wizards themselves. Besting these powerful beings will be no small feat, but worth your while if you have the strength and wits to do so, with rewards such as new companions, materials for new artifact weapons, and other sweet loot.
You can read the full blog post on the Neverwinter site.