Warlords of Draenor hotfixes have been published the 09/04/2015 ! Here is the patch notes :
Patch 6.2 Hotfixes: September 4 (Source)
Raids and Dungeons
- Fixed an issue where the loot tables for Gal'darah and Eck the Ferocious got swapped while Timewalking.
- Fixed an issue where players were not transforming correctly into the opposite faction in Mercenary Mode.
- Players with the Mercenary Contract effect should now be able to use faction mounts while in an Arena Skirmish, Rated Arena match, or Rated Battleground.
- Fixed an issue where Rated Battleground faction auras were incorrectly applied while in the Arena.
- Fixed an issue where some characters were unable to complete bonus objectives.