Blizzard Europe UK Released a preview of the PvP Honor and Rewards system.  There is a total of 14 ranks in the PvP Honor system.  One of them is Stone Guard.  If you are a Horde player, this rank will be familiar to you.  That building near the Valley of Spirits with the instance-whirlpool in Orgrimmar says that you can’t enter unless you are a Stone Guard or higher rank.  The Alliance version is in the Old Town by the Barracks.  Previews to the Shaman and Horde Warrior sets were displayed.  Reward items can be purchased from PvP vendors located inside the Barracks.  Read more details.