We know that a PvP blog is coming "very soon" and there will be a lot more details on the feature than in Wilson's tweets but this particular one is hard to stay off the radar:
@cmlive1 There is no specific PVP gear, only gear good for PVP depending on your build.
— Jay Wilson (@Angryrobotics) December 1, 2012
Of course, this makes a lot of sense as we've all known since the beginning that Diablo 3 PvP would not be WoW PvP and it was safe to assume that the "wear whatever gear you want" concept would persist after the launch of the arenas. In the absence of more details however, there is still the question how will Diablo's PvP will avoid a very real Gear > Skill problem.