The Tree of Savior team has posted the first information about a new PvP content coming to the game. Players from the same regional servers can participate in 2v2 or 5v5 battles operating on a best of three system. In 5v5 matches winning teams will accumulate rank and earn a PvP currency to use in a special shop as well as a unique icon next to the team's name. Rankings will be set on a weekly basis.
You can find more details on the Tree of Savior official site.