En Masse Entertainment has published the official update notes for the TERA: Fate of Arun patch that is set to deploy tomorrow, Tuesday, February 24th beginning at 7:00 am Pacific / 10:00 am Eastern. The most notable addition to TERA is the incoming Skycastles and the new GvG functionality.
Guilds will be able to take part in the new Crusades GvG mechanic that will allow guild leaders to enter their groups for either Cutthroat (PvP) or Challenger (PvE) competitions in order to move up in the rankings during the 28-day event. The top ten guilds at the end of the cycle will be rewarded with a skycastle.
To read more about competitions and GvG warfare, head here. To read the full patch notes, see the TERA patch page.