What would be an example encounter?
Depends on where in the campaign setting you are. If you are in the Eye (where the world is stabler), then encounters might have a normal feel to them because dreaming surges are less effective and the landscape is stable. However, if you're in the Wyrd, then the landscapes you might be fighting on and the creatures you might encounter could be quite strange, as in surrealist painting bizzare. On the other hand, if you're in the Dreadlands, then you might find yourself in a forest of night elms, trees that emanate darkness or come across a canyon covered in dread bushes that sap a person's strength and make them flee in terror. Worse yet, you might run into a patrol of diaboli, infernal undead that each embody one of the seven deadly sins.
However much the DM desires... though of course there are areas of the world that are more dangerous than others, like the Sea of Lost Souls (where many a foolish hero has disappeared), the Fomorian Foothills (where the evil-eyed King Balor rules), Nightwood (where Queen Mab and the Unseelie court holds sway).
Yes, and dragons, too.
Pretty much anything that has appeared in classic literature or that is a classic fantasy trope. In fact, for those who like to mix their fantasy with a bit of science fiction... I leave that possibility open in regards to the unclaimed lands (those portions of Nevermore not claimed by a dreamlord), especially in the Dreadlands and Wyrd.
What are the adversaries like?
The adversaries range from secret organizations like the Unseen (an organization of thieves and information brokers who have a knack for uncovering the impossible and acquiring the unobtainable) to the outright evil Nightspinners (a group of Unseelie fey dedicated to helping demon-queen Lilith to reweave the world in her own image). There are also the unpredictable Weavers of the Wyrd, a group of powerful wizards who long ago were driven insane by the dreamlord Diabolus, the Horned Lord, ruler of the country of Brimstone, and master of the volcanic city of Bal.
Is it a twist on a points of light kind of setting?
Yes, one of the key concepts behind the setting is the idea that some humans and ethereals have become "dreamlords." These dreamlords claim a portion of the world of Nevermore as their own and remake it in their own image. As more lands are claimed, Nevermore grows larger, keeping a portion of the world always open to further expansion.
Of course in order to create there realms the dreamlords need a substance called "neverite," which is the only stable substance in the world. Over time, the dreamlords learned how to harness this stability to create permanent settlements in the ever-changing world of Nevermore. As such, neverite is a highly sought after commodity, but also the only form of currency that has any worth in this world. Some dreamlords have easy access to neverite, others do not and this creates a great deal of tension between the haves and the have nots. Oddly, most neverite seems to appear in areas controlled by the "good" kingdoms, which of course makes the evil dreamlords all the more envious.
That kind of stuff. I've read some of the preview and I love what I've read so far.
I'm glad you like what you've seen so far. It was a blast writing this setting and I really do hope people enjoy playing in it.