I doubt they will... not for open world PvP. It's too easy for a level 85 to come in and whip up on some lowbies, and if it's just another playground for people bored at the level cap like the HFP towers, it defeats the purpose and is a waste of time.
It'll be for zone buffs, like all the other pointless world PvP objectives that just get dominated by the most populated faction on the server.