New mounts in Patch 6.2.2 (and beyond)
Draenor flying is here! Hopefully you've already completed Draenor Pathfinder and are now soaring through savage skies. With this patch there are three new mounts available right now, with three more coming later in the year.
The stunning Heavenly Azure Cloud Serpent is the reward for the newest mount collection achievement, Lord of the Reins. It requires you to have 300 mounts on a single character (presumably excluding class mounts).
Two mounts are available from new Timewalking vendors, during monthly Timewalking Dungeon Event weekends (Lich King one month, Burning Crusade the next). The purple Eclipse Dragonhawk is sold by Cupri in Shattrath, and the ghostly blue Ironbound Wraithcharger sold by Auzin in Dalaran. These require a new currency, Timewarped Badges, dropped by bosses in the special dungeons. The drop rate is quite low, but you'll earn a bonus 500 via a quest item for your first dungeon, so if you only run one a month you can still buy a mount after ten events.
Coming later in the year:
A new yeti mount, the Minion of Grumpus will be related to the Feast of Winter Veil in 2015. We're not yet sure of its source.
Our Legion Collector's Edition mount reward has been revealed! The Illidari Felstalker is based on the new Felstalker model introduced in 6.2. It will have a matching companion pet.
Armory update bug updates...
The Felfire Hawk and Voidtalon of the Dark Star are now showing up on the Armory, so you no longer have to manually add them to your collections. Unfortunately, however, the Brown Horse and Swift Warstrider seem to have vanished from the Armory around the same time and now require manual flagging (see their individual pages to add them to your collection). The Chauffeured Mechano-Hog and Acherus Deathcharger have not changed status and also remain missing.