Blizzard
It's a one-time quest that leads you to Tanaan. Assumptions that this was a big quest hub, focused around Foundry content, or that it's a chunk of substantial content that we cut, are incorrect. It's a one-time quest chain that directly leads into events of 6.2, and that's the patch it's in.Blizzard
Currently, the Apexis traders in the Horde town of Warspear and Alliance town of Stormshield offer gear up to item level 655, but in Patch 6.1, you’ll be able to trade up to ilvl 670 Ethereal Waist, Head, Wrist, Legs, Hands, Back, and Finger (ring) items.