Production-ready Hair and Fur
The strand-based Hair and Fur system is now production-ready, giving you the ability to simulate and render high-quality hair, fur, and feathers to create believable humans and animals. The system features built-in LOD generation and is compatible with effects such as DOF and Fog. Cards and meshes can be generated in engine for lower-end hardware (Experimental). 
Sky, cloud, and environment lighting (Beta)
Author and render realistic or stylized skies, clouds, and other atmospheric effects with full artistic freedom, with a new Volumetric Cloud component that can interact with Sky Atmosphere, Sky Light, and up to two directional lights. Components can be lit and shadowed dynamically, in line with time-of-day updates in real time.
Water system (Experimental)
Create believable bodies of water within your landscapes with a new Water system that gives you the ability to define oceans, lakes, rivers, and islands using splines. Built-in fluid simulation enables characters and objects to realistically interact with the water; the fluid also responds to Terrain, such as reflecting ripples off the shore, and reacting to river flow maps.