Oh wow this question again....it's like we need a sticky.

Yagluth is still the end. They're working on Mistlands but it isn't out yet.

What is out (since Hearth and Home)
New food system and new foods
Changes to armor and block system, yes you can still parry
Swamp: new large mob and light armor set
Mountains: New caves, new mobs in caves, new light armor set, new build pieces
Plains: new mob, new build pieces