When does 3.0 launch, and is PvP enabled?
Not sure on launch date. There's a lot to do still, and a lot of systems we want to make, to make sure all of what we're doing will last into the future. As such, I don't have an ETA, but I know it's going to be 1-2 months at least of work to do casually.
PvP will be using the system from 2.0/2.5 where you can enable it optionally to bypass scaling. This will allow you to kill quest NPCs that are trivial fairly easily, as well as bypassing scaling down to NPCs but you also risk being killed by the people around you. As scaling is disabled they will also drop no augs, but as there are no augs in the item, they will also be potentially able to be traded. That won't do much if there's no augs, but at least the option to do so will be there.