Diablo 3 players used to dueling in the game should know they will no longer be doing this once update 1.0.7 hits. Instead, you will be "brawling" because essentially, that's what you've been doing from the onset.
According to an update on Battle.net, the name change was partially due to feedback received on the PTR and Blizzard said it dropped this news early so that people can go ahead an used to calling the mode by its new moniker.
"Rather than wait to announce this in the official patch notes, we wanted to let players know ahead of time, in part to reduce confusion and in part to explain the reasons behind the change,": reads the post. "While the system we designed for 1.0.7 was developed in order to give players a fun way to beat each other up in Diablo 3, we've come to realize that "dueling" wasn’t the best name for it.
"Sure, it allows players to pummel, stomp, immolate, and hex fellow Nephalem, but it's not a traditional one-on-one duel. It’s something much more wild and open-ended, where you can engage in 3-person and even 4-person free-for-all skirmishes with few restrictions. There's a lot of power in a name, and we think that the idea of a brawl more accurately describes the system we created."
So there you have it. No more dueling. Only brawling.