I think this is something they wanted to get more people interested in pvp so attract them into frontline eventually they'd get rank up etc then go back wolf den? I mean, we're basically still get same reward but bonus is soldiery tomes as well according to them.

So while watching that frontline, we can pretty sure its' going be capture flag and trying get highest point to win or wait until 30min over to see who highest point to win the match. Apparently there will be monster in battleground as well. July 8th we'll see more info about this as it go live I guess heh.