A new update (Version 6.1.17315) is now available that adds in content and addon updates for Patch 7.3.5 releasing on US servers today.
You can now access the updated Wound in the World zone and pick up a faction-themed questline for Alliance or Horde. Leveling scaling is now available throughout the game and our guide order suggestions have been updated to reflect this. The “next guide” popups have been updated to suggest our recommended next zone to level in, but you can now also manually pick a different zone at anytime to enjoy the freedom of level scaling.
How To Update Your Guides:
Here are detailed instructions explaining how to update your guides:
http://zygorguides.com/support/manual/update.php