The initial build of World of Warcraft patch 7.2 is up for testing now, but be fairly warned: It’s not all of the patch. It’s not even necessarily a majority of the patch; as confirmed by community manager Lore, the main focus right now is stability and testing the new Demon Invasions, which means that players can expect to see many further iterations before the patch goes live. There’s an entire chunk of stuff coming with the Broken Shore, after all.
You can peruse the patch notes for this first build now just the same; they include some nice additions like a “Sets” tab for transmog collections, higher item scaling for World Quests, and more options for gaining reputation from Emissaries past Exalted. You can also take a look at some of the new models already in the patch, including new class mounts of various hues and a long-overdue new model for Trade Prince Gallywix.