Do you think it's possible blizzard is ballsy enough to announce a release date of a game without a pvp section of the game, then for the following 2 months pretend to take a break from work and finish everything they had to for online play, in time for the first week's patch(possibly the same as the RMAH) and launch the pvp gameplay everyone's been begging for
It seems that your information is incorrect, not everyone is begging for Player vs. Player combat. I am sure that not even half of the player base of diablo III players are interested that much in PvP, considering the previous games had nothing to do with that.
I for one am so fucking happy they are delaying the release of PvP. I guarantee if it was there from launch the forums would be flooded with posts about how X class is so overpowered compared to Y class when they are still level 15 with no gear.