The second wing (Wailing Halls) of the Tomb of Sargeras raid has been unlocked today and we have sent out a new update (Ver. 6.1.16245) that covers this content. You can find the guide for this under Dungeons \ Legion Raids \ Tomb of Sargeras – Wailing Halls or by searching for “Tomb of Sargeras” in the keyword box. This update also include several fixes, improvements, and added content.

How To Update Your Guides:
Here are detailed instructions explaining how to update your guides:

http://zygorguides.com/support/manual/update.php