According to an update on Diablo 3, posted by Jay Wilson, there will be no PvP available at launch. While no release date is official set they axed the PvP portion to cut down on time to get the game out faster. PvP will be available later on down the road in a patch. Jay stated that the PvP is ultimately done but with everything they still want to add and balance it would set them back out further than they already are.
While we work on making sure PvP lives up to its full potential, we hope you’ll find some consolation in the fact that soon, you’ll be having a blast leveling characters, finding items, learning the classes, and perfecting builds…and that when the Arenas do arrive, you’ll be all the better prepared for battle.
Good thing Diablo 3 looks like a blast on the single player side. Whenever it does release start getting your character ready because when the PvP arenas start opening up it will be a bloodbath!