Another in my series of WAR guides, attempting to explain Mythic's poorly documented RvR schemes.
The latest RvR system change comes at us with recently released patch 1.2.1. As of this patch, there is now an additional way to acquire the RvR set gear. These items can still be found in gold reward bags from keep/fort/city captures, but now you can also collect the new medallions, and use these to purchase the gear.
The are several sources for these medallions: drops from enemy players; rewards from keep and fort captures; rewards from keep and fort bags; and rewards for T4 zone captures.
Enemy players now have a chance to drop one or more medallions as loot when they die in addition to their normal loot. The type of medallions players drop is based on their renown rank. The highest level medallions can only be found as drops from players with a renown rank of 71 or greater! Loot bags from keep/fort/city captures now give you an additional choice of taking a lump of medallions instead of the other rewards. If you don't win a loot bag at a fort or keep capture, you are automatically awarded Officer (or Conqueror for forts) medallions which will appear in your backpack. Being present in a zone when its captured will also automatically drop a number of medallions into your pack. Successful defense of a keep, fortress or city invasion will award medallions also. And finally, there is a repeatable, chained series of RvR quests in each warcamp for which the final quest rewards 4 Officer medallions.
High-level medallions can be broken down into numerous smaller ones, but they can not be reassembled into larger pieces, so take care when breaking down a medallion.
So what do you do with all these medallions you have collected? Well, you use them to buy armor! All of the RvR set gear, from Obliterator on up through Sovereign now requires these medallions to purchase, with prices increasing as you go higher up the ladder. You can no longer buy any of the RvR set items with gold alone. The vendors in keeps still only have a limited selection of the RvR armor sets, but there are not several new vendors in the Viper Pit that sell all the pieces.
Note: RvR set boots still have a chance to drop as loot from players based on their renown rank, so it is still possible to acquire the boot armor pieces without ever winning a loot bag or a single medallion.
Edit: As of April 24th, Mythic applied a hotfix to the servers which now gives a chance for gloves from all the RvR sets to drop from appropriate level players. So you can now acquire two pieces from each set without using any tokens.