I've been playing around with the newest preview 2.8(7), and the new wind feature that affects the grass. I must admit that i was hoping for a total revamp of the grass look, but for now it seems like it is only an added animation to the old billboard style. and I've never felt like it looked good enough for most of my work, unfortunately.
So, i decided to play around with the default grass texture found in the enscape installation folder, and replaced it with a more detailed texture, following the same rules as the original, and this is the result after a little tweaking. It works just like the original grass... that means it changes color and is animated by the wind.
Enscape developers: Let me know if you want to get a hold of the new texture. i really think it should be possible to increase the grass quality of enscape considerably without much work!