http://i.imgur.com/3afpM.png
On dueling:

"Here's a quick rundown of how dueling will work in Diablo III as well as some insight into our design philosophy for the system.

How it Works:

  • To duel another player, you’ll need to speak with Nek the Brawler at the inn in New Tristram.

  • Speaking with Nek will take you and your party to the Scorched Chapel, a new zone designed specifically for player combat

  • This zone has custom geometry and features four different areas: the church, the graveyard, the river, and the lake

  • Dueling currently supports up to four players in a Free-For-All format, which means you can battle your friends either one-on-one, three-player FFA, or a full four-player FFA

  • If you die in the dueling world, you will be resurrected in the dueling zone
  • Death is not permanent in the dueling zone, even for Hardcore characters

  • You don't take any durability damage while in the dueling zone

  • When you're done dueling you can take a portal out or use your Town Portal to return to town.

"

Beyond the dueling update in 1.0.7 the Wizard and Monk are getting buffs. There are also a plethora of other changes you can read about below. Interested in checking out duelling although from everyone I know, my character isnt as epic. Still, something new to checkout.

Are you interested dueling in Diablo III or have you moved on?
http://us.battle.net//d3/en/blog/8414560