Blizzard is keeping their word when saying they will be releasing content this expansion even faster than in the past. With that said, the Public Test Realm for patch 5.1 will be live later today. The client is available though download at the Community Site if you don't already have it. A simple patch will deploy if you already have the PTR/Beta installed to your system from the Mists of Pandaria Beta and PTR.
Patch 5.1 is going to introduce a lot of new content. The new Brawler's Club was hinted at a few days ago, and now there will be new World PvP in Krasarang Wilds where you can slay your enemies and build your own faction's base! Two new reputations will be added as well to accompany the new World PvP. These will more than likely be attuned to the PvP player base of World of Warcraft when it comes to rewards.
With all new content comes new exploits, bugs, hacks, bots, and guides. Stay tuned with Ownedcore to get the latest updates on both Patch 5.1 and the Public Test Realm.
You can find the official patch notes here: Patch 5.1 Public Test Realm - Coming Soon - World of Warcraft
-Teryaki