No official roadmap, but on the basis of the now-defunct roadmap and developments since that time the following is a reasonable estimate- Ashlands, including fortress mode (whatever that turns out to be), and a new NPC and associated quests. Minibosses and some modest world-wide additions Frozen North plus a new "gimmick" associated with it (like fortress mode is for ashlands) and a new aquatic thing, but may not be a variant sea serpent, or at least not only a variant sea serpent. A few more NPCs. Added aquatic stuff that they can come up with which wont hose the pre-iron-age folks, which may be tricky given that they are pretty insistant that nothing is in "just because we could", so whatever they come up with both cant screw the bronze-age folks and must serve a purpose. One possibility is as the subjects of certain NPC quests, and/or as a source for a plains light armor set which is the one light armor set we're currently missing. No timelines for anything of course.

See that horse over there? It's well and truly dead. PLEASE stop beating it. The roadmap was taken down eons ago.

Your comment indicates that you already know that development is notoriously slow on this game. Read the updates the devs post to keep abreast of changes and play something else or use mods while you wait.

There is no official road map. My guess is a couple years to release. Ashlands by the end of this year and North next year, plus whatever else they decide to do.

No we are not out of development. Infact recently patches were so frequent that mod users were getting pretty desperate and begged the developers to slow down. However noone here can tell you with any certainty how long it will take for stuff to get finished.