Patch 3.1.2 brought it with the usual slew of undocumented changes, but here's one that appears to have flown under the radar for a while -- Mei Francis, Dalaran's exotic mount vendor, now sells basic Outland flying mounts (read: gryphons and wyverns) at both regular and epic speeds. This is great news for, well, anybody who doesn't want to go to Outland! I know that when my shaman hit 77 and I bought all of my flying skills, it was a pain to have to go to Shadowmoon Valley to buy my mount, so I can certainly appreciate the change.
Of course, there are even more mount changes in store -- a 150% speed flyer at 60, for example -- so this is obviously part of the devs' mission to streamline the leveling and traveling process for players of all levels. A welcome and unexpected change for quality of leveling life -- that's what I like to see.