Flying mounts may not be allowed in Draenor until patch 6.1
In episode 347 of The Instance podcast, which was recorded at BlizzCon in front of a big crowd, Ghostcrawler was kind enough to answer some fan questions live on the podcast. The topic of transportation in Draenor came up and he revealed that Blizzard wants to delay flying as much as possible, and has even considered delaying it until patch 6.1.
Their goal is to have Draenor feel like a very dangerous place. The comparison Ghostcrawler used was Fel Reavers in Outland, only instead of Fel Reavers there will be giant Gronn like the ones seen in the Warlords of Draenor trailer. Situations like that are much less dangerous when you can just hop on your drake and fly away.
The topic comes up at 58:30 in the podcast for those interested, but the entire episode is worth a listen.
