Quested Epics! Seriously, this is a neat new feature, announced at blizzcon, which I've seen completely glossed over by the community. The idea is, if you do a quest well enough(meet some requirements, go above and beyond, beat a timer, i dunno.) you'll recieve rare or even epic loot as a result. Epics aren't epic, that's kind of beside the point, but epics via leveling for questing are abolutely a new thing!