Arena Rating System & Requirement Changes
Blizzard announced today what many of us have already noticed, too many players are gaining access to the high end PvP weapons. These weapons are on par with the top end raid drops, but much, much easier to access. Blizzard announced today that they recognize this fact and are taking steps to address it. The changes are aimed at ensuring items are equally available from both Raiding and PvP.
The current arena rating system allows more players to have higher ratings in the 2v2 bracket when compared to 3v3 and 5v5. We are preparing an in-game update that will be improving the rating system of the 3v3 and 5v5 brackets to allow all three of the brackets to have a similar number of players able to achieve ratings on par with whats currently possible in our 2v2 arena bracket. As a result, we are changing the personal and team rating requirements for the item level 239 weapons from 2200 to 2350, but keep in mind the tooltip will continue to show the requirement as 2200 until patch 3.1.2.
As a result of the above improvements, this change will prevent an excessive number of players from reaching much higher ratings and acquiring the highest grade of weapons in-game. The increase in rating requirements is designed to keep the number of players able to obtain these arena weapons on par with the number of players who are able to obtain the same grade of weapons from Heroic Ulduar.
When Arena Season 7 launches we plan to return the highest rated season 7 weapons back to 2200 while also ensuring that the difficulty in achieving that rating is closer to what is intended, yet of similar difficulty for all brackets (rather than being easier for 2v2). Source