First up, let's examine the change made to Dampening. Dampening was introduced to the game after patch 5.4 to fix the issues caused by The Crowd Chose You. Dampening is a stacking healing reduction debuff, that decreases healing done to players and pets by 1% per 10 seconds, up to a maximum of 60%. This would usually kick in after 10 minutes, but was starting at 5 minutes. This was accidental and will be hotfixed as Community Manager Lore explains:
However, the change to hunters' Dismiss Pet is intentional. It was being used to get full-health pets in the arena, and to reset cooldowns on things like Roar of Sacrifice. Now, hunters will only be able to swap pets before the arena starts, and this is intentional. It won't be changed back. Hit the break for Lore's post on the matter.
Filed under: PvP