So, this latest patch brought us a new Eclipse bar and some UI improvements.
The new bar looks more night & day themed, and one side glows light after you get the Eclipse proc. The graphic is really neat. Even your spells on the bar are highlighted (Lunar Eclipse has moonfire & starfire light up on your bar. Solar Eclipse has wrath & insect swarm light up).
I think it really looks good. Here’s some pictures! (click on each one to see it full size).