Dragonhawk mounts became available with Patch 3.0.8 which added the achievement, even though the dragonhawk models were already ridable as early as Patch 2.0.1 and flight masters in Quel'Thalas were given dragonhawk taxis with Patch 2.4. Seven epic quality mounts are currently available to players. Of these, two are exclusively attainable by Alliance players and three for Horde aligned players.
Mountain o' Mounts
The reward for earning this achievement is a dragonhawk mount. A blue one for the Alliance and a red one for the Horde.
Added in Mists of Pandaria, 2 new dragonhawk mounts were made available after obtaining 200 mounts. These new armored versions are similar to the previous ones-blue for the Alliance, red for the Horde.