World of Warcraft: Flying Mounts

Blizzard updated their The Burning Crusade - Bestiary with more information on flying mounts. The page says: "After reaching level 70, players will eventually be able to obtain a flying mount for their characters.", but doesn't say how. I still hope it doesn't require some stupid long grind quest, or a quest where you need to hand in resources worth several thousand gold pieces. But my trust in Blizzard making the flying mount accessible for even the casual player is low, it will either be very grindy and expensive, or you'll need to hand in the head of the end boss of the toughest level 70 raid dungeon to get the mount.