The next game in the Atelier franchise and the start of a new series of games.
The collection system has been redesigned, the items found are the same but different tools or actions will be required to find them at collection points.
The crafting system has been updated and a new item making system has been added, to be revealed at a later date.
The turn-based combat is getting changed in some fashion to make it more tense, also to be revealed later.