That Goron isn't armored. If you remember, the area before the Fire Dungeon at E3 was called "Goron Mines"... So, I'm assuming Gorons will having a mining role in the game. This goron is probably wearing mining equipment, etc. Anyway, I really like how the new gorons look. The old ones look cute and cuddly, but these ones are strong and bulky.
See that town area in that artwork? I'm assuming that is Hyrule Castle Town. It's probably the town featured in this screenshot:
Here's some more artwork for you:
What the hell is this thing?:
Dungeon entrance?:
Winged Twilight Beast (nice face):
Midna and Wolf Link livin' it up:
Big firey boss shown at E3 2004 and 2006:
Hena, the fishing girl:
Rakka and Tori (watch out Tingle!):
Toaru Village House:
Hylian Knight (now armed with legged accessories!):