The changes just keep on coming, and at the oddest times too. The following was just unlocked on the patch 2.4 PTR: Arena gear is now obtainable in exchange for PvE tokens. According to World of Raids, Tier 4 tokens will get you season 1 gear, T5/6 will get you season 2, and the new Sunwell T6 tokens will get you Vindicator gear. You can also, apparently, exchange Badges of Justice for "all PvP gear," as pictured.
What does this change signify? Yet again, Blizz is trying to open up progression. Whether this is in advance of Wrath, when this all will be relatively meaningless, or simply in response to continuing pressure for advancement from players, this is probably a change that will be lauded by those who don't already have what it gives. If you've got this arena gear already, it might seem unfair that people can get it through alternate paths, and maybe it is. But I like that Blizz keeps trying to make it easier to be versatile in the game, to not just have to devote yourself to either PvE or PvP. Players being able to take advantage of all the game has to offer is key to its continued success.