I'm a bit late commenting on this, but about ten days ago IGN posted a gameplay trailer for Tyranny of Dragons, the upcoming fourth module (mini-expansion) for Neverwinter.
It doesn't really show anything amazing, just some characters fighting a couple of new monster models in familiar-looking locations. The implication to me seems to be that this module won't follow the "new area with dailies" model but will instead add new content to existing zones. This is neither particularly good nor bad in my eyes; it just makes me wonder about how exactly accessing the new content is going to work.
Also, a small detail I really liked: "The Scourge Warlock uses forbidden lore and long-forgotten ancient secrets to power her magic." I suppose it's sad that I still have to find this remarkable at all, but too many gaming companies still default to always casting their heroes as male characters.