For most players, is the definitive experience due to its superior animations and visuals. However, Build 40 is essential for:

The soundscape of Knox County received a massive upgrade in this build.

No. The Indie Stone has explicitly stated that . No further "upd" (updates) will be released for it. The version you download today—40.43—is the final, terminal version. All development focuses on Build 42 (the "Animals & Crafting" update) and eventually Build 43.