First of all, here's a link to a very likely model of the new legendary mace Val'anyr. It's very probable that it's this one here seen in more detail. The lightning effect keeping it together looks promising. I'm thrilled that there's a legendary item in the game that I might wield some day.
WoWInsider has posted some screenshots of the Tier 8 armor. It's a bit confusing because there are two screens of a night elf female and a night elf male where they aren't wearing robes which I don't particularly like then there's one screen with a human wearing the druid armor too and he has a robe. I think the robe is absolutely essential if I'm going to like that set!
I'm no designer myself so I have no idea how I'd design a tier set but it seems this one has taken some influence from the [Nordrassil] Tier 5 set. I liked that one a lot, especially the shoulders which sprouted small flowers. Tier 8 is made of wood too, it's got this forehead type helmet just like Nordrassil did but overall I'm a bit disappointed. Nordrassil felt a lot more tasteful. Ok, so druids are creatures of nature, we like wood, we can haz moonfire so there's a moon in our forehead, we can haz furry paws too so there are prints right there on our shoulders, we can root things, fine there's roots and even a moon with craters...it feels very exaggerated and it's such an obvious overuse of symbols that anyone could come up with that concept.
Anyway, just make sure it's got a robe and I'll be happy.