Visiting my house on the Bullroarer Beta server, I saw all new vegetation. I guess these are the newly added frills, as mentioned in the Update 18.2 Beta Release Notes (Eriador has newly added frills. You can turn frills on and off in your advanced graphics options panel. This includes all kinds of ground-cover (grasses, reeds, wildflowers, etc).)

These screenshots are from Bullroarer (Raebidus), and Evernight (Zunday).Rae (Medium)

Zuny (Medium)