Judging by the pace of development, there's at least 2 more years of development before full. There's one biome currently in production, and one more that hasn't even been started. I don't anticipate the Ashlands being pushed out until Late summer at the earliest to the beta branch, and then sometime in the fall for the "official" live EA build.

What's here already is polished to a standard I'd rate above AAA developers. THe game is fully functional, almost bug-free, and extremely well designed top to bottom. It's hands-down one of the best games available on steam, early access or not.