Ok, I was doing a NPC-Zombie test earlier, and a zombie with gold armour spawned. It also had an enchanted helmet. Is this new? I never noticed it before. Anyone care to help? Oh, and I got a pic of it.
Zombies can spawn with armor of leather, gold, and chain (maybe iron but I'm not sure), and they can be randomly enchanted too. They can also hold an Iron Shovel and an Iron Sword (which they can and will swap out with a Diamond Sword if you place it in front of them). If you kill a zombie with armor or a held item, it can drop it. These features have been around for quite some time now.