Check out some of the screenshots of foliage with Unreal Engine 4.7, beautiful rendering of leaves and foliage, HDR texture support, in-editor animation editing, along with hundreds of optimizations and improvements.
The new Foliage Shading Model allows light to be transmitted through grass, leaves, paper, and other materials.
Diffuse lighting on the opposite side of the surface becomes transmissive lighting on the side being shaded
The foliage system has been optimized to to support huge, open environments! We now use a hierarchical system for managing and culling of foliage that scales to millions of instances! Also, we now smoothly transition between mesh LODs with a temporal fade to eliminate the annoying pop when switching LODs!
Unreal Engine 4.7 Renders Pretty Snazzy