Eurogamer has a video featuring Ree Soesbee and Kristen Perry talking about the sylvari’s design and uniqueness. There’s in-game footage of the redesigned sylvari, including Caithe.
Kristen mentions the darker side of their design, which I’m happy to hear because the plant kingdom can be pretty dang cruel. I for one look forward to seeing how their dark side is appropriated through the Nightmare Court and winterborn. Go see the video. It’s quite beautiful.