There has been multiple rumors and some leaks from sources that have been right before that they'll likely be introducing 'darkness' classes for guardians in D3, allowing for a division in the ranks, and thus creating PvPvE territories where light and dark guardians can engage, but its still in the wilds where other creatures/races are as well. Obviously it's just conjecture and rumor right now, but first we get gambit (a PvE mode with minor PvP elements, as well as the Awoken Queen sub-plot in the Dreaming City about choosing a side. Now in this Season of the Drifter we'll be expanding gambit modes as well as getting a quest line where we can choose the vanguard or the drifter's side; a soft light/dark choice of story line. The signs are there they could be going that direction, which I'm cool with if it happens, but if not I'm still open to see where things go.