Greyhawk. Forgotten Realms. Eberron. They're nice and all. But what if you want to play in something different? Well, you might want to check out World of Revilo. It's a new campaign setting book that's up on Kickstarter now. New classes, races, sub-classes, and more. There's even a Bestiary to go with it so you can fill the world with all manner of new creatures.
From the campaign:
Revilo is a new & unique campaign setting for 5E DnD that includes new player races, new sub-classes, new monsters, new magic items and more!
In the past 30 years humans, elves, and dwarves have crashed onto the coast of Revilo, discovering a land the other side of the world had never seen. One human has built an army and hired the vile, marauding Greyskrulls to aid him on his conquests. Will the rest of Revilo be able to form an alliance before this army conquers them? Will the gods wake from hibernation to keep their people safe?
While the outlanders try to find their way in this new land, a revered sect of 18, known as the Keepers of Secrets, are slowly being hunted down by a new cult. Inside each of the Keepers of Secrets is a fragment of the evil god Ghyrma. The Keepers of Secrets fear that this new cult is collecting these pieces to try and resurrect the long-forsaken god.
The campaign's about halfway to their funding goal with 29 days left to go.